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On a planet of ancient ruins, four nomads walking in the forest come across the body of a naked man lying among the dirt and leaves: It is Dr. Daniel Jackson. When they ask him who he is, however, he replies: "I don't know."
At Stargate Command on Earth, Jonas Quinn excitedly marches into General George Hammond's office, where Major Samantha Carter is briefing the general on the current activities of Goa'uld System Lord Anubis. According to intelligence from SG-1's rebel-Goa'uld allies, the Tok'ra, Anubis is systematically decimating the forces of the remaining System Lords with his new superweapon.
Jonas interrupts by announcing he has found the planet of the Ancients wherein lies "The Lost City" and the weaponry that can defeat Anubis. After studying the tablet recovered by SG-1 on the planet Abydos (in "Full Circle") and some of Dr. Jackson's old notes, Jonas says the actual translation is "City of the Lost" and that it refers to a place called Vis Uban, or City of Great Power. This was where the plague began that killed all the Ancients who didn't ascend. In honor of the dead, it was renamed City of the Lost.
Referring to the list of Stargate addresses that Colonel Jack O'Neill entered into the SGC computer four years ago when he had the Ancient Repository of Knowledge downloaded into his mind, Jonas suggests that Vis Uban, being unfinished when the Ancients' civilization fell, would be the last address on it. SG-1, SG-3 and SG-5 'Gate to the address, where they find the nomadic tribe and Daniel Jackson. But Daniel doesn't remember O'Neill, Carter or Teal'c and is not sure he wants to remember who he is, since he feels he might have done something wrong. Carter convinces Daniel he was a very good person and to return to SG-1. The team theorizes that Daniel was expelled from the race of ascended beings by his benefactor Oma after he interfered in human affairs on Abydos.
At SGC, Daniel slowly begins to remember things. He is also able to easily read the stone tablet and tell Jonas that his translation of the word "lacun" was wrong, and so were his own notes. It does not mean "of the lost," which is why they still haven't found The Lost City and won't on the planet they are searching. It means "to make lost," as in camouflaged.
Daniel's ability to read the tablet gives Jonas an idea: If Anubis is part Ancient, as Dr. Jackson in his ascended form had said, then Anubis could read the tablet. A plan is put into effect: Jonas and Daniel make a fake tablet, altering the words to lead Anubis to the planet where Daniel was found, now designated P4T-3G6. The F-302 space jet (formerly the experimental X-302) is dismantled, sent through the Stargate and reassembled there. A command post is set up, with General Hammond himself on site.
The Tok'ra plant the fake tablet where Anubis can find it, leading him straight to P4T-36G. Teal'c goes to confer with System Lord Yu, who pledges to bring the full force of the remaining system lords' fleets down on Anubis once SG-1 succeeds in destroying his superweapon; the team plans to do so by destroying the ventilation shaft that, according to Tok'ra intelligence, cools the weapon's crystal power core. Carter and O'Neill will fly the F-302 through the shields of Anubis' mothership, utilizing a short subspace burst; in theory, the F-302 will blink out and reappear within Anubis' shields. However, it could also pass by Anubis' ship altogether or, worse, materialize inside of it.
Because no one knows where the shaft is, Jonas and Daniel will be injected with a Tok'ra-developed radioactive isotope, so they can ring onto the ship, decipher the elaborate Ancient dialect-based codes protecting Anubis' computer systems and find and relay the location of the cooling shaft to O'Neill and Carter, who will then take it out. Then Yu's fleets will take out Anubis.
Everything goes according to plan: Daniel and Jonas, with the help of SG-3, take the place of two of Anubis' Jaffa guards, take their ring activator and use it to ring up to the mothership.
Meanwhile, Carter and O'Neill are under attack by Goa'uld gliders. O'Neill targets and takes out two of them. But they are still under attack and need the intel from Daniel and Jonas who, after a bit of trouble, finally come through. But the intel is useless unless Anubis powers up the weapon; otherwise, exploding the cooling shaft will have little effect.
Then things go awry: Yu changes his mind at the last moment and orders his first prime, Oshu, to withdraw the fleet across the galaxy. Teal'c is taken into custody. Without the Goa'uld fleet to draw Anubis' fire he has no reason to use his weapon. But then he is alerted to SGC's presence on the planet below and targets the Stargate. Hammond orders an immediate evacuation. On the F-302, meanwhile, just before six gliders converge on the ship, Carter activates the hyperdrive, jumping the craft through Anubis' shields and almost scraping the hull of the Goa'uld mothership. Under fire from the ship's guns, O'Neill targets the shaft and takes it out. Anubis is now forced to power-down his weapon. Because the Mothership's shields only keep things out, Carter and O'Neill fly away through them and escape.
Meanwhile, Jonas and Daniel are on the run from the Jaffa. Jonas makes Daniel go up into a ventilation shaft, leaving himself to be captured. As the escaping Daniels briefs Carter and O'Neill on the situation, Anubis approaches Jonas, now strapped to a table. "I won't tell you anything," Jonas says to Anubis — who, holding his sinister spiked mind-probe device, replies, "Oh, yes, you will."
The mission to destroy Anubis' new superweapon last episode was a success, but....
Teal'c is still a prisoner on the mothership of Goa'uld System Lord Yu. Daniel Jackson, temporarily camouflaged from sensors, is hiding within the ventilation shafts of Anubis' mothership. And Jonas Quinn has been captured and subjected to Anubis' mind probe.
The fact that his unique physiology has left Jonas unharmed by the probe interests Anubis greatly — though not as greatly as what he has learned from Jonas' thoughts: the existence of the unstable yet powerful fuel-source Naquadria on Jonas' homeworld. Anubis' ship soon appears over the capital of Jonas' homeland, the nation of Kelowna.
At Stargate Command on Earth, Colonel Jack O'Neill, Major Samantha Carter and General George Hammond receive an urgent message from Ambassador Dreylock of the Kelownan High Council that Kelowna is under siege by Anubis' forces.
Aboard Yu's Mothership, Teal'c learns from First Prime Oshu why Lord Yu did not fulfill his pledge to rally the System Lords against Anubis. Yu, the oldest of the System Lords, has been growing senile and believed that Anubis was in another system across the galaxy. Teal'c convinces Oshu to assume command and rally the System Lords against the rogue Anubis. They approach Lord Baal, who is at first enraged that a second-in-command and a shol'va (traitor) would dare contact him. But when Teal'c proposes a plan to defeat Anubis, Baal listens.
In a Kelownan bunker on the outskirts of the capital city, O'Neill and Carter have just emerged through the nation's Stargate, which was moved underground during the world war with the Tiranians and the Andaris. The war ended with the Kelownans using their Naquadria bomb. Many lives were lost, but the Tiranian and Andari representatives have come to negotiate peace — unfortunately, at about the same time Anubis' ship appeared.
In the Kelownan briefing room, Dreylock and Commander Hale realize that Anubis' troops have taken over key positions across the planet. Most of the High Council has been taken hostage. After suffering executions and much destruction, the Council has given Anubis what he wanted — the Kelownans' entire stockpile of Naquadria.
O'Neill insists that the Kelownans tell the Andari and the Tiranians about the Goa'uld and the Stargate. He and Carter also inform them that Anubis will not go away after draining the Naquadria mines, but will ravage the planet and enslave its people. Teal'c enters through the Kelownan Stargate and informs everyone of his agreement with Baal. O'Neill, ever suspicious of making deals with the Goa'uld, won't approve the plan unless all the planetary representatives are in total agreement.
Meanwhile, Anubis tests his first batch of stabilized Naquadria, using it to power one of his ship's weapons arrays and fire a burst at the planet. The attempt fails, causing an explosion on Anubis' ship — fritzing out some of the ship's systems, including the force field on Jonas' cell. Daniel is on the opposite side of the doorway, having located the cell through the ship's computers. Jonas leaps through the intermittent field, and they both make a run for it to the ring room, where they can teleport off the ship.
Informed that Anubis' soldiers are ransacking the museum of antiquities, Carter realizes that Anubis is searching for a Goa'uld information crystal that might contain records of the experiments conducted on Naquadria by the original system lord who once occupied the planet. She, Teal'c and Dreylock go to the warehouse where the Kelownans have stored their Goa'uld artifacts. There they find the crystal but are overtaken by Anubis' elite Jaffa guards. Just then, Daniel and Jonas ring into the room — one of the artifacts stored in the warehouse is a Goa'uld ring platform. A firefight ensues, and the Jaffa are defeated.
When they return to the Kelownan base, Commander Hale demands the crystal — as a company of Jaffa led by Herak, Anubis' right arm, emerges from behind him. Anubis has promised to leave Kelowna alone in exchange for the crystal. Hale hands the crystal to Herak — who in turn executes Hale on the spot. He then announces that everyone else will be executed, as well.
Just then, Baal's fleet comes out of hyperspace and attacks Anubis' ship. Some blasts hit the city below, while a frantic firefight ensues in the Kelownan base between SG-1 and the Jaffa. Carter knocks down Herak, who drops the crystal. Herak vanishes through the Stargate. Daniel is about to be hit by a staff blast when Jonas pushes him away and is hit instead. Ultimately, Baal destroys Anubis' ship — though Anubis has vanished, and a small central portion of the rogue system lord's ship disengages and warps away into hyperspace.
Back at SGC, Jonas prepares to 'Gate back to Kelowna. He has blamed himself for Daniel's death (in "Meridian") and now he feels his debt has been paid by his saving Daniel's life. Ambassador Dreylock tells him that though he was once considered a traitor to Kelowna, Jonas is now much-needed there: The Andaris and Tiranians have agreed to participate in a joint ruling council, but only on the condition that Jonas would be the Kelownan representative — they believe that his experience over the past year dealing with other worlds will be vital to his planet. And so, Jonas returns to Kelowna, and Daniel Jackson, who is remembering his past life very quickly, rejoins SG-1. They have both come home.
A 15-year-old boy claiming to be Colonel Jack O'Neill uses the colonel's security I.D. to enter Stargate Command, where he's taken into custody. It seems incredible, yet the boy has all of O'Neill's knowledge and his smart-ass attitude. Dr. Fraiser runs a DNA test and, aside from a minuscule variation, the DNA of the boy is an exact match for O'Neill's.
In an attempt to discover how O'Neill has apparently regressed 30 years overnight, the teenager, Major Carter, Daniel Jackson and Teal'c go to O'Neill's house, where the teen has a flashback of an Asgard visitation during which he saw four green lights. To O'Neill's chagrin, General Hammond decides to have Carter rather than O'Neill conduct a briefing with the test pilots scheduled to fly the F-302 space jet. Dr. Fraiser later informs SG-1 that the genetics team she called in has discovered that O'Neill's genetic structure is breaking down — he is dying. Jacob Carter — Major Carter's father, whose body symbiotically hosts the Tok'ra Selmak — arrives and offers a temporary solution: The Tok'ra can freeze O'Neill until they can better understand his condition. O'Neill says he'll think about it, but escapes from SGC instead.
Meanwhile, Selmak looks at O'Neill's test results and says the boy is not O'Neill, but a clone. Carter, Daniel and Teal'c, who have been researching alien-abduction cases similar to O'Neill's, surmise that whichever of the Asgard was responsible for the abductions replaced the test subjects with clones until he was finished studying them, and then switched them back. O'Neill's regression was a mistake of which the Asgard researcher was unaware. SG-1 plans to intercept the next switch in order to apprehend him. When SG-1 catches up with the clone O'Neill, he's not thrilled with the plan; he'd rather find the Asgard researcher himself and force him to correct the genetic mistake. Convincing General Hammond to give him a zat, the teen O'Neill waits in bed at home for the switch to occur at the time SG-1 has deduced. When the duplicate O'Neill is zapped up to the Asgard ship, the original O'Neill is returned to his bed without a clue of what happened. On the ship, the duplicate zats his Asgard abductor, straps him down to his own examination table and then, following Carter's instructions, beams SG-1 onto the ship. The original O'Neill is brought up to speed and interrogates the Asgard researcher — who confesses that he is Loki, a renegade who was convicted 19 years ago of performing unsanctioned experiments on humans in an attempt to create the perfect clone body for the Asgard. Their very existence depends on their ability to clone their bodies and transfer their consciousness from one to the next. He has risked punishment again because O'Neill, who is legendary in Asgard circles for his advanced human genetics, could be the key he's been searching for. Loki also informs the duplicate that he cannot help him. Carter contacts SG-1 ally Thor, who arrives just as the duplicate O'Neill begins to become ill. Thor admonishes Loki, who should have known that O'Neill's genetic code is protected by a marker in his DNA, which is why the duplicate is defective, and says O'Neill is not the missing link the Asgard are looking for. Graciously, Thor corrects the teen O'Neill's DNA so that the clone can live. The duplicate O'Neill is provided for by the Air Force and decides to go back to high school, where he can show up his teachers and score with girls knowing what he knows now.
During a close-quarters withdrawal from another planet, Colonel Jack O'Neill, Major Carter and Daniel Jackson jump through the Stargate into Stargate Command. Teal'c follows a few seconds behind them, with a Jaffa on his tail. The alien soldier is shot dead by General Hammond's men — but not before the Jaffa has injured Teal'c, who collapses with a large, smoking wound in his gut.
Teal'c recovers in the infirmary. Without his tretonin — the drug that replaced his lost symbiote, which granted healing powers — he would be dead. Dr. Fraiser informs him that the Jaffa's blast passed directly through his empty symbiote pouch, doing damage to his spine. Teal'c will have to undergo intense physical therapy to make a complete recovery.
Meanwhile, Daniel is nagged by a memory he can't pin down. He can remember everything from before he died, but nothing from after he ascended.
Teal'c eventually recovers and is pronounced fit for duty. Yet he says he is not ready. He explains that he is kek, which in Jaffa means both weak and dead — for if one is weak, one might as well be dead.
Daniel asks Teal'c to help him kelnoreem, hoping that the Jaffa meditation technique may help him remember whatever it is that's trying to break through. It works — Daniel sees Teal'c's son, Ry'ac, and Teal'c's mentor, Bratac, enslaved by the Goa'uld while trying to recruit fellow rebel Jaffa.
Carter surmises that if Bratac's and Ry'ac's capture happened before Daniel retook human form, whatever supply of tretonin that Bratac had would be almost depleted by now. They need to find the planet where the two are being held. Teal'c requests that Rak'nor — the Jaffa rebel SG-1 first encountered in "The Serpent's Venom" and most recently in "Allegiance" — be brought to SGC.
Upon looking at drawings Daniel has made from his recovered memory — "a Naquada refiner near a Ha'tak-class vessel under construction on a planet with two moons" — Rak'nor identifies the planet as Erebus, currently under the rule of Goa'uld System Lord Ba'al. Since Jaffa unwilling to serve the Goa'uld are brought to Erebus to be worked to death, it was a logical place for Bratac and Ry'ac to find recruits.
Daniel suddenly remembers being on Erebus in ascended form when Bratac and Ry'ac were captured. But he was powerless to interfere. Carter finds a coded signal received from Jaffa rebels three months ago, and Daniel identifies it as the code to deactivate the force field protecting the Erebus gate. Carter synthesizes it and SG-1 — including Teal'c — as well as SG-2 and SG-3 embark on a rescue mission.
That night, Teal'c and Rak'nor infiltrate the prison camp, locate Ry'ac and Bratac's tent and administer tretonin to the dying Bratac. But while doing so, they're captured and tortured. O'Neill, needing a strategic distraction, has Daniel and Carter teleport up to the Goa'uld mothership and rig its antigravity platform to blow.
Ry'ac and Rak'nor spread word throughout the camp to be ready to fight when the time is right. But Ry'ac is spotted away from his work station and sentenced to die. Teal'c offers himself instead. The prison commander accepts. He is about to execute Teal'c when Carter's device goes off.
The Goa'uld ship comes crashing down. Teal'c engages the camp commander in hand to hand combat and snaps the commander's neck. O'Neill and his soldiers lay down mortar fire and pick off enemy soldiers. As the prisoners revolt, Bratac, his spirit returned, joins the fight. The camp is liberated and the prisoners go to join the rebels at the Alpha Site on a planet whose Stargate address the Goa'uld do not have.
When a MALP sends data back to Stargate Command from planet P3X289, the readings indicate that the planet's atmosphere is highly toxic. Major Carter and Daniel Jackson are intrigued when a large domed area appears on the MALP's display, and astonished when the device easily penetrates the dome and transmits a picture of blue skies, grass and trees. Suddenly, the signal is lost.
Because the planet's Stargate is outside the dome, SG-1 embarks on a reconnaissance mission wearing hazmat suits. When they penetrate the dome, Colonel O'Neill and the team find the MALP sitting on the grass in perfect condition and discover the air to be breathable. The team then encounters a little boy named Nevin, who leads them to a charmingly old-fashioned town where they meet Nevin's father, Kendrick. They next meet The Council: three men and one woman who tell SG-1 about the Link — a direct neural interface with the computer that controls the dome. Through the link, they can access thousands of books and data files. That is why the townspeople all wear small interfaces on their temples.
That night, unknown to anyone, the female member of the Council gets out of bed, dresses, packs up all her belongings and walks through an exit point in the dome.
In the morning Pallan, the caretaker of the dome's underground systems, shows Carter around. He has agreed to help Carter rig up a computer interface so she can download some of the amazing technology this civilization has to offer. Suddenly the screens change to streaming computer code while Pallan appears momentarily inert. The same thing happens to Pallan's wife, Evalla, who is helping Daniel translate the text in the old books, which were written before the Link made hard copy obsolete. But both Pallan and Evalla deny that anything strange has occurred. And, when O'Neill and the others offer the Council, now made up of three men, the opportunity to relocate from the dome to a planet with a breathable atmosphere, they politely refuse and deny there ever was a woman on the Council.
Carter notices a large drop in the dome's power-utilization figures on her laptop. But the readings on the main computer show everything's normal and Pallan detects no problem. O'Neill and Teal'c then discover that the MALP is gone. And Carter informs O'Neill about the power drop. If it continues, the dome will fail and everyone in it will die.
Other strange events occur: Evalla disappears just like the female Council-member did — and then Pallan, in all apparent sincerity, denies he was ever married. Kendrick, once eager for Nevin and himself to leave the dome with SG-1, now denies they ever spoke of it. Teal'c and O'Neill don their hazmat suits and go outside the dome, where they find the M.A.L.P. — which has never moved. They realize that the dome is shrinking.
When O'Neill and Teal'c return from outside they find the townspeople converging on them with hostile intent. Meanwhile, Carter is trying to convince Pallan to remove his neural interface. But he, along with everyone else has now been programmed to believe that removing the interface means certain death. Daniel finally convinces Pallan of the truth by producing written records that the dome once held more than 100,000 people — not the 1,373 it holds now. The computer is automatically deleting people from the population in accordance with its increasing loss of power while updating the townspeople's memories through the Link.
Pallan, his Link interface removed, patches into the computer and erases all memories of SG-1 from the townspeople's minds. SG-1, now free of the Link's interference, proceeds to evacuate the domed people to a non-toxic world.
When a MALP sent to Planet P2A-347 detects a distress beacon, SG-1 'gates to that world and finds a crashed spaceship containing hundreds of people in cryogenic sleep. Colonel O'Neill orders a headcount during which he, Teal'c, Daniel Jackson and Major Carter are all stunned by an unseen weapon. Teal'c awakens first to find Carter and O'Neill still unconscious and Daniel hysterical. SG-4 extracts the team back to SGC, where Dr. Fraiser implements security protocols and places Daniel under restraint. He is wildly out of control, claiming to be Martice, a Sovereign of Talthus from the starship Stromos bound for the planet Ardena. But Martice is not the only consciousness residing in Daniel. According to his EEG readings, Daniel has retreated into a coma while a dozen other personalities take turns speaking through him. The most rational of these is Tryan, Engineer Second Rank of the Stromos. According to him, each cryosleeper's consciousness is stored in an active-matrix memory module to keep it from deteriorating during long voyages. There is no way to separate the cryosleeper from its consciousness or send it to any other than its corresponding body — unless that person is dead. It is now surmised that someone onboard the Stromos was revived, stunned SG-1 and, because the ship is rapidly losing power and cannot sustain the cryochambers much longer, transferred the souls of the dying into Daniel so they could survive. In essence, Daniel has become a lifeboat. While Carter and Teal'c head a team back to the ship to search for the party responsible, Dr. Frasier meets another of the souls Daniel carries — a small boy named Keenin. He tells her how their planet was doomed to destruction and how three ships were built to carry three thousand people picked by lottery to go the planet Ardena, where they would repopulate their species. Because Keenin's father was a crewmember, he was allowed to take one family member. He picked Keenin. Back on the Stromos, Teal'c and Carter corner the revived crewmember, Pharrin. He himself is carrying a dozen souls. He bypassed the cryosleep systems' fail-safes in a desperate attempt to save his race. Carter tells him and the others inside him that SGC can hook up a Naquadah generator to the ship to supply the power needed to resuscitate the cryosleepers. Then they could relocate his people to another world via Stargate — if Pharrin promises to separate Daniel from the souls he's carrying. It's a horrifying choice because those souls will be lost forever — and one of them is Pharrin's son, Keenin. Pharrin decides to cooperate and now must convince the ones inside Daniel, especially the arrogant Martice, to leave Daniel's body and die so that their race can live. Martice will not cooperate and as Sovereign orders Pharrin not to perform the separation. But he is replaced by Keenin — and after father and son say their tearful goodbyes, Pharrin defies Martice for the good of his race. The ship's power is replenished, Daniel is restored and the cryosleepers can now be awakened and relocated to a new world.
On P3X-403, the SG-11 archeological team headed by Colonel Edwards discovers a Naquadah mine that could yield enough of the rare, off-world mineral to build many interstellar battle cruisers and other spacecraft. But when geologist Lt. Ritter disappears after going out to inspect the site, Edwards, whose team is not trained for search and rescue, sends for SG-1 and SG-3.
Teal'c and SG-3 search for Ritter while Daniel Jackson studies relics found by SG-11. Among the artifacts is a large yoke, used to harness a race called the Unas, which was long ago enslaved and abandoned by the Goa'uld. Daniel believes that Unas may still live on this planet, and that they saw Ritter as an intruder in their territory and attacked him.
Daniel's suspicions are confirmed when Teal'c and SG-3 find another entrance to the mine, near which Ritter's body is hung up like a scarecrow among some Jaffa warriors' skeletons that are similarly displayed.
When Edwards hears the news, he becomes incensed. Against Daniel's advice, he and SG forces enter the dense forest where Ritter disappeared — and are attacked by a horde of Unas. During the skirmish, Colonel Jack O'Neill is wounded in the arm and is about to return fire, when Daniel cries out in the Unas' primitive language. The aliens retreat, and after an angry discourse with Edwards — who does not care for civilian Daniel's involvement — O'Neill takes the matter to Stargate Command.
There, to Edwards' consternation, General Vidrine from the Pentagon authorizes Daniel's plan to negotiate with the Unas with the help of Chaka, an Unas who SG-1 encountered on another planet (in "The First Ones") and with whom Daniel has kept in contact. If negotiations are resolved within the time allotted to determine the viability of the mine, fine. If not, Vidrine authorizes the use of deadly force.
With O'Neill laid up in the in the infirmary and Major Samantha Carter performing a complete overhaul of the Stargate's diagnostic system, Daniel, accompanied by Teal'c, must handle the uncooperative Edwards and the Unas situation on his own.
Back on P3X-403, Daniel and Chaka find a clan of Unas and its leader, Iron Shirt. Back at the camp, Daniel tells Edwards that the Unas consider the mine a sacred place and it should be protected from industrial development. But the Naquadah mine has proved viable, with a potential yield of 53,000 metric tons. Back at SGC, Vidrine and SGC commander General Hammond give Daniel and Chaka 24 hours to negotiate a peaceful solution. Otherwise, the Unas will be forcibly relocated to another planet.
Iron Shirt is not happy with the news and informs Daniel and Chaka that his people will defend the sacred ground and that there are more Unas here than meets the eye.
When an Unas returning to the battle site to retrieve his sacred necklace is shot by mistake, more than a thousand Unas converge, ready to attack. The humans are totally outnumbered. Daniel explains to Edward that since the humans brought death to the Unas, only a display of submissiveness will be accepted. They must kneel. Edwards swallows his pride and orders the troops to kneel. And Daniel and Iron Shirt negotiate.
A compromise is reached: The Unas will honor their dead by helping to defeat their ancestors' killers, the Goa'uld. And so that their sacred ground will not be desecrated, they will work the mine themselves and give the Naquadah to SGC. Edwards is amazed and admits that O'Neill was right about Daniel — he's a pain in the ass, but worth it.
Major Samantha Carter rushes into Stargate Command, still wearing her motorcycle gear from a joyride. She was summoned because the spaceship captain Warrick — a Serrakin whom SG-1 rescued from planet P2X-005 — has a diplomatic proposition: In return for allowing Carter and SGC full access to the ion propulsion engine of his ship, the Seberus, he asks for her technical assistance and a Naquadah generator in order to have a chance at winning the Loop of Kon Garat race, held by his home planet Hebridan's largest corporation, the Tech Con Group. The prize is a lucrative contract.
Carter will agree only if she's along for the ride — SGC doesn't just let Naquadah generators out of their sight, after all. And besides, there's her need for speed. She convinces a dubious General Hammond to okay the diplomatic mission, and on Hebridan, Colonel Jack O'Neill and Dr. Daniel Jackson attend meetings that Warrick has arranged with the highest-ranking members of the Hebridan government and business community.
At the Seberus hanger, Warrick's brother, Eamon, who has refitted the ship for the Loop, explains to Teal'c that Warrick is in financial trouble and his wife remarried while he was stranded on P2X-005. Warrick sees winning the race as the only way to get his life back on track. But the competition is fierce. Among the pilots are a legend named Muirios; the beautiful and very fast La'el Montrose; and Jarlath, an ex-con with whom Warrick shares a personal hatred.
The race begins. After Warrick and co-pilot Carter evade the obstacle course's attack drones, they move on to Stage Two, in which the racers head into the coronasphere of Hebridan's sun. But then an explosion occurs: The ship's power diverter has been sabotaged and overloaded. The Seberus is heading into the sun. Their only hope is to relocate the Naquadah generator, bypass the diverter and supply power directly to the engines.
It works, restoring the ship to full power. Meanwhile Eamon suspects that his Tech Con boss, Del Tynan, has accessed the Seberus redesign plans in order to sabotage the craft. Eamon and Teal'c break into Tynan's computer and find their suspicions confirmed. They also find Tynan arriving with armed guards. He reveals his plan to have the only full-blooded human in the race — Muirios — win in the interest of human supremacy on Hebridan, where humans and the reptilian Serrakin peacefully coexist and even intermarry. Meanwhile the Seberus gets a distress call from another racer — none other than the evil Jarlath. Warrick and Carter divert to save him and find that he, too, has been sabotaged. Tynan contacts Warrick and threatens to kill Eamon and Teal'c if Warrick doesn't drop out of the Loop. Meanwhile, O'Neill and Daniel arrive at Tech Con and contact Hagan, Tynan's boss, with whom they've struck a deal to bring a Stargate to the planet in exchange for an ion drive for study.
Hagan takes Tynan into custody and Warrick is now free to win the race. But Murios has an unfair lead. La'el is second. Jarlath's devious demolition skills come in handy as he reroutes the conduit from the Naquadah generator, doubles it back through the communications array and sends a blast transmission that disables Muirios' ship. La'el wins! As a reward, she hires Warrick as her co-pilot on her new Tech Con contract.
As for Carter, she's really looking forward to kicking butt in next year's Loop....
Stargate Command scientist and resident SG-1 wannabe Dr. Jay Felger — who, after screwing up, endangering and ultimately helping save SG-1 from First Prime Herak in "The Other Guys" — is demonstrating a new plasma weapon to Major Carter and Colonel O'Neill, with the help of his assistant, Chloe. But instead of blasting a hole in a huge concrete block in the lab, it disrupts the power throughout all of SGC.
After the base is operational again, General Hammond is about to give Felger the boot. But Felger promises to produce a fantastic new invention in one week. Hammond gives him 24 hours. Felger has no choice but to pitch Carter his half-baked project Avenger, a computer virus that would allow SGC to disable any Stargate in the network. Carter sells General Hammond on the idea, and he agrees to give Felger another chance if Carter works with him. Felger is ecstatic, since he not only reveres Carter, he has the hots for her too — so much so that he's never noticed Chloe is smitten with him. Because Dr. Daniel Jackson is supervising a relocation project on planet P3L-997, which is experiencing severe seismic disturbances and weather anomalies, and O'Neill and Teal'c are on P3C-249 negotiating with rebel Jaffa leaders who are beginning to fight among themselves, Carter and Felger are able to work undisturbed and bring Avenger to the testing phase.
Hammond gives them authorization to test the virus on the Stargate on P5S-117 — one of the principal Naquadah mining sites of the Gou'ald system lord Ba'al. If the gate can be disabled, Ba'al's Naquadah-supply network would be seriously damaged.
But instead of simply disabling the gate on P5S-117, the virus triggers a systemwide update throughout all the DHDs (Dial Home Devices) in the entire 'Gate network. Because SGC doesn't use a DHD, they now have the only Stargate that can dial out. Twelve of the 15 SG teams offworld at the time return safely before the entire network goes offline. Unfortunately, Daniel is trapped on P3L-997, where the floodwaters are rising, and Teal'c and O'Neill are stranded on P3C-249 in the middle of a brutal firefight.
The only hope for rescuing the stranged SG personnel is to feed the old coordinate system into one of the DHDs, which will then trigger another update, and theoretically put everything right. And it has to be done quickly, because Lord Ba'al is taking advantage of the fact that 'Gate travel is impossible by using his vast fleet to attack the other System Lords, whose forces are now paralyzed.
The only coordinate program intact is in SGC's computer. The data is uploaded into the Stargate system . . . but it doesn't work, and Daniel has only 48 hours before the city in which he's trapped vanishes beneath the rising waters.
Carter and a despondent Felger eventually reason that the upload didn't work because the Avenger virus was somehow transmitted, along with the new coordinates, to all the DHDs in the network. So Avenger is preventing the upload — and it has to be neutralized manually at the original source of introduction, the Stargate at System Lord Ba'al's mining planet, P5S-117.
Carter and Felger are the only ones qualified to handle the operation. After Chloe musters her courage and gives Felger a deep good-luck kiss — and a CD-ROM of the anti-virus, which he almost forgot — Carter and Felger 'Gate to P5S-117 . . . where they discover that Ba'al has altered Avenger to destroy the Stargate network. The screw-up wasn't Felger's fault at all. But now the antivirus has to be modified to work against Baal's modification. While Felger works feverishly, enemy Jaffa converge on the Stargate — and Carter faces off alone against a small army.
Suddenly, blasts from an Alkesh fighter, a midrange Goa'uld attack vessel, rain down from the sky against the Jaffa. The surviving attackers retreat. The Alkesh vessel lands . . . and out of the ship step O'Neill and Teal'c. "We got tired of waiting," O'Neill says.
The Avenger program is successfully corrected, Daniel gets the remaining inhabitants of P3L-997 to safety, and Felger daydreams of Chloe and Carter mud-wrestling over him. All is well — for now.
While on a mission to P3X-955, SG-1 is attacked by Jaffa forces loyal to the Gou'ald System Lord Moloc. Suddenly, six Jaffa warrior-women storm in and take out the attackers. Mala, leader of the armed Amazon party, has been seeking SG-1, and she has the team 'Gate with them to an outpost called Ha'ktyl — the Jaffa word for liberation, which they also use to describe themselves. There SG-1 meets Ishta, Moloc's beautiful high priestess. She and her fellow warrior-women have been secretly rescuing newborn female Jaffa, who are condemned to death by Moloc, and bringing them to this haven. Ishta and her seconds, Mala and Neith, tell how they use their offworld privileges to 'Gate to other planets, ambush Jaffa patrols and take their Gou'ald symbiotes. The symbiotes are then transferred to young girls at Ha'ktyl when they reach the age of Prata, at which time they must take a symbiote or fall ill and die. The Ha'ktyl women ask SG-1 for weapons, food and supplies to continue their struggle, and in return offer their services and knowledge. Major Carter, knowing that Teal'c uses the Pangaran drug tretonin (from "The Cure") in order to survive without a symbiote, proposes this drug as an alternative. The idea is detestable to Neith, whose younger sister, Nesa, is fast approaching Prata. Teal'c eventually convinces Ishta that tretonin, though not without risks, is worth trying, and she asks for volunteers to accompany her to Stargate Command to test the drug. Mala insists she go in Ishta's place. A fellow warrior named Emta and two others also step forward. While Carter, Colonel O'Neill and the five Jaffa women 'Gate to SGC, Dr. Daniel Jackson stays behind to report any news on the tretonin tests that SGC will radio-in through the MALP. Meanwhile, Teal'c and Ishta become very close.
Daniel tells young Nesa of the drug that can save her life. This conversation infuriates Neith, who after conferring with fellow warriors Ginra and Ka'lel challenges Ishta to combat for control of Ha'ktyl. Teal'c tries to break up the fight when Daniel arrives with bad news: Mala did not respond to the tretonin — she is dead. The other women are fine, but now Ishta is distrustful of the humans and will sacrifice Teal'c and Daniel unless the their women at SGC are returned. Ishta and Neith go to ambush another of Moloc's patrols to procure a symbiote for Nesa — who has decided she does not want a symbiote. She won't allow someone else to die so she can live.
The women guarding Daniel and Teal'c obey Nesa's wishes and take the men to where Ishta and Neith are preparing to cut the symbiote from a dying Jaffa. But Neith is shot by a staff blast from another wounded Jaffa. Her symbiote is damaged beyond repair. Teal'c convinces Ishta to 'Gate to SGC with Neith and Nesa. It is the only chance for both of them.
Nesa takes the tretonin with great success and convinces Neith that she must also, if she's to live to teach Nesa how to be a great warrior. With the women of Ha'ktyl now free of the Goa'uld and trained in the administering of tretonin, a new alliance is forged between them and the Tauri — as is a personal alliance between Ishta and Teal'c, signified by a lingering kiss before the Jaffa warrior-woman 'Gates back to Ha'ktyl.
On the rendezvous planet where the Goa'uld system lords Tilgath and Ramius were to forge an alliance, Teal'c and his mentor Bratac find the two armies slaughtered and Ramius gone. Ramius' First Prime is still barely alive and warns them to leave immediately. But it's too late — out of the distance, a tall, lone warrior in black body-armor comes forth shooting power blasts of tremendous magnitude from his wrist weapons. After a desperate firefight, the warrior finally falls. The body is brought back to Stargate Command, where Major Carter and her father Jacob/Selmak remove its armor and discover a huge but poorly detailed synthetic Goa'uld host with no evidence of trauma from energy blasts. The armor appears to be made of an energy-absorbing material. Teal'c and Bratac did not kill the warrior: It died of a heart attack, being engineered for strength and not longevity. Selmak — the Tok'ra half of Jacob Carter's symbiotic being — surmises that this was intended to be a synthetic Goa'uld foot-soldier. Also, the being was only about three weeks old and was given life after it was fully grown. Its energy signature is similar to that of Goa'uld sarcophagi, which can heal and even restore life but are not able to bring life to things that were never alive in the first place.
Selmak explains that thousands of years ago, a Goa'uld system lord named Telchak found a device created by the Ancients from which he was able to create the first sarcophagus. Telchak and fellow system lord Anubis went to war over the device, but Anubis never found it. The Tok'ra have long sought this original device in the hope of using it to perfect the sarcophagus technology. Now it might be the key to fighting this kind of warrior, by discovering how to reverse the device's life-giving energy. Its healing power is also of great value.
But where to find it? Dr. Daniel Jackson recalls that his grandfather, Nicholas Ballard, in his search for the fountain of youth, claimed he found evidence indicating that the source of the fountain's power was a piece of alien technology used by early Mayan tribes around 900 BC (in the episode "Crystal Skull"). Ballard traced its origin to Chac, the Mayan God of rain, who may have been Telchak. Much of Ballard's notes are indecipherable because, as Selmak sees instantly, they are written in an obscure Goa'uld dialect.
Jacob/Selmak deciphers the notes and surmises that the device may be in one of Telchak's temples in Honduras. It is also surmised that Anubis, after he ascended, had the knowledge to build one of these devices on his own. Bratac suggests that if Anubis is behind this, he is using these soldiers to wipe out the minor Goa'uld system lords and absorb their resources in preparation for battle with Ba'al and the other, stronger Goa'uld lords.
Daniel and his assistant, Dr. Lee, go to Honduras. There they locate Telchak's underground temple and find the device. But when they remove it from its resting place, a booby trap is sprung and they are almost drowned by tons of water. Miraculously, they escape. Meanwhile, Major Carter develops a plan to capture one of these new Goa'uld "superwarriors" alive in the hope that it can be interrogated and provide vital intelligence about how they can defeated. The armor absorbs energy blasts, but can be penetrated by a fine-tipped titanium dart filled with tranquilizer.
Because Ramius escaped, it is likely Anubis will send another soldier to his planet. SG-1 and SG-3 stake out the Stargate on Ramius' planet until the superwarrior appears. When he does, they trap him in a Tok'ra force field and shoot him with the darts — to no effect. He then easily penetrates the field and walks through a barrage of gunfire and explosives towards his target: Ramius' pyramid. Meanwhile, Ramius' numerous Jaffa troops block off the Stargate and converge on SGC's forces. Bratac suggests that they give themselves up. The warrior destroys Ramius and his Jaffa, and Colonel O'Neill, Carter, Tealc, Bratac and the SGC soldiers are snared in a Goa'uld cell. The last remaining Jaffa frees SG-1. O'Neill's team finds the synthetic Goa'uld warrior and teleports him via Goa'uld rings into the hold of a cargo ship. Then they cut off all life support in that area until the soldier is knocked unconscious. Back at SGC, the heavily chained warrior is hooked up to a Tok'ra imaging device that projects his thoughts. This enables SGC to learn where the superwarriors are being created. But they also learn something else — General Hammond has received word from the State Department that Daniel and Dr. Lee have been kidnapped — and there are no clues as to where they are.
Dr. Daniel Jackson and his colleague Dr. Lee are being tortured by the Honduran revolutionary Rafael, who wants to know about the artifact they've found in one of the secret temples of the Goa'uld system lord Telchak. The artifact is actually the original device used by Telchak to create the first healing sarcophagus, and it could be the key to discovering how to reverse the life-giving effects of this technology — which system lord Anubis is using to create a race of indestructible supersoldiers.
Back at Stargate Command, General Hammond tells Colonel O'Neill that Daniel and Lee are being held for ransom and will be killed in 72 hours if the United States doesn't pay. Unable to intervene directly because of strained relations with Honduras, the president has unofficially authorized the CIA to gather intel on the two scientists' whereabouts. Time is of the essence: Rafael is growing tired of Daniel's refusal to talk about the artifact and has resorted to electric-shock torture. The CIA eventually surmises a location, and an agent named Burke requests that Colonel O'Neill aid in the extraction. O'Neill is raring to go, even though he and Burke have a shaky history: Burke still blames O'Neill for not coming to his defense on a friendly fire charge resulting in Burke being sent to permanent assignment in Honduras. Hammond, Teal'c, Major Carter and her father Jacob (and his Tok'ra symbiote, Selmak) hatch a plan to infiltrate Anubis' base on Tartarus, where the new supersoldiers are being developed. The stargate on Tartarus is inside Anubis' base and has a powerful force field protecting it. In order to shut down the sensor array, Selmak volunteers to wear the captured supersoldier suit, which is capable of penetrating the force field. Once the array has been deactivated, a Tok'ra scout ship will deliver the truncated SG-1. Radioactive isotopes taken internally will permit the team to move around freely without being detected by the base's internal sensors. With the scout ship in position behind Tartarus' moon, Jacob/Selmak successfully penetrates Anubis' Stargate and is perceived as just another drone by Thoth, a Goa'uld scientist. He is taken to the drone lab for repairs. When Anubis calls Thoth away to work on a malfunctioning remote probe, Jacob/Selmak deactivates the sensor array. Carter, Teal'c and his mentor, Bratac, land on the planet, and Carter and Teal'c sneak into Anubis' base via an exhaust port. At the Honduran rebel camp, Lee has broken down under torture and has told Rafeal everything about the ancient device and its possible link to the fountain-of-youth myth. Rafael activates the device, and he and his men begin to feel rejuvenated. He interrogates Daniel to learn more. Daniel warns Rafael that the device could be harmful and to deactivate it — to no avail. Knowing what long-term exposure in a sarcophagus can do to a person's sanity, Daniel isn't about to wait around and see what the original source of that technology will do to Rafael and his men. Rafael has already killed one of his soldiers, Chalo, for disobedience. Daniel and Lee break their bonds and escape into the trees. Chalo comes back to life and Rafael and his men repeatedly try to kill him again. When Chalo finally dies, a now insane Rafael takes his equally deranged men and goes after Daniel and Lee. Meanwhile, Burke and O'Neill are on Daniel and Lee's trail. Along the way, Burke tells O'Neill the real reason he killed a fellow soldier: The man was a traitor and was about to kill Burke. Burke concealed this information, which could have exonerated him, in order to protect the slain man's reputation and family. In Anubis' base, Teal'c, Carter and Jacob/Selmak discover symbiote-holding tanks — all empty except for one that holds a queen. From the brain patterns she is emitting, Jacob/Selmak surmises she's in league with Anubis to create an army of mindless symbiotes for his drone army. Carter attaches a C-4 charge under the queen's tank. But the team is discovered while observing Anubis addressing an army of thousands of supersoldiers, and Carter explodes the C-4, destroying the queen. With supersoldiers in pursuit, Carter, Teal'c and Jacob/Selmak board the scout ship and take off. But one of the supersoldiers has gotten aboard and knocks Carter out. Teal'c is also momentarily stunned while Bratac rings the supersoldier out of the ship in mid-flight. Back on Earth, Rafael and his men corner Daniel and Lee, but are gunned down by the just-arriving Burke and O'Neill. Chalo, however, has again returned to life. O'Neill empties his P-90 into him — to no effect. But Burke blasts the self-resurrecting Chalo to hell with a grenade-launcher.
With the Goa'uld device in hand, Daniel, Lee and O'Neill return home. And O'Neill promises to find Burke — who turned out not to be such a bad guy after all — a cozier assignment. SG-1 reunites at SGC. Aside from a few minor injuries, all is well. Now comes the hard part — finding a way to turn the power of the ancient artifact against Anubis' new and even more powerful army.
Major Carter is onboard the recently repaired Prometheus helping Colonel Ronson get the starship home via short sub-light bursts — jumping out of hyperspace every 50 light-years so that the sub-light engines can cool down.
At the current stop, Carter notices a gaseous anomaly; she requests Ronson investigate it. Just then a hostile alien ship appears. Outgunned, Carter suggests they use a short sub-light burst to make a hyperspace jump into the cloud for cover. As she's rerouting the systems, the ship suffers a massive hit, knocking Carter unconscious. When she awakes, she is the only crew-member left aboard; the escape pods have been jettisoned. The hyper-drive is intact but the sub-light engines are offline. What's more, the hull will breach in about eight hours.
As Carter uses every stopgap measure she can to save the ship, she has trouble staying awake. Teal'c then appears and tells her she must stay awake to stay alive. She also gets visits from Dr. Daniel Jackson, her father Jacob, Colonel O'Neill and a little girl named Grace — all of whom Carter surmises are part of her subconscious mind and all of whom have something important to tell her.
Daniel suggests Carter use this opportunity to investigate the cloud. Teal'c warns her that she may not be on Prometheus at all, but being held prisoner, along with the other crew-members, aboard the alien ship, and that her mind is being probed. While she's searching for a way to get the sub-light engines online, the aliens could be learning from her how the ship's technology works. Jacob tells her to stop following every scientific lead and follow her heart, find someone to love and not deny herself a chance to be happy. Daniel comes up with a theory that the cloud is a sentient being and if she talks to it, maybe it'll let the ship go. But how to do that? Daniel then suggests that the little girl Carter keeps seeing may be the personification of the cloud.
O'Neill finally appears and encourages Carter not to give up and suggests that there may be a chance for them to be together. They even share a subconscious kiss.
At Stargate Command, O'Neill is worried that Carter is 18 hours past due for contact. Daniel proposes a plan to check out all the Stargates along the Prometheus' route, since the Tok'ra don't have an available ship. But the plan fails. Teal'c notices O'Neill's grief and suggests to him that he has deeper feelings for Carter than he admits.
Back onboard Prometheus, Grace appears blowing bubbles, giving Carter an idea. If she can manipulate the sub-light engines, she can create a hyperspace bubble around the ship, protecting it from the cloud's harmful effects, and bring Prometheus out. She hails the alien vessel, which turns out also to be trapped in the cloud, and offers to use the bubble to help them as well if they return her crew. The crew appears back onboard. Carter's plan works, and both ships exit the cloud. Now freed, the alien ship retreats.
Back at SGC, Carter awakens from a four-day coma brought on by a massive concussion aboard Prometheus. O'Neill is at her bedside. With Carter's feelings for him awakened, could they have a future together outside of SGC?
Stargate Command gets a surprise visit from Jonas Quinn, a scientist and former SG-1 member from the planet once designated P9Y-4C3 and now dubbed Langara. But the circumstances of this reunion are not at all happy.
Jonas tells SG-1 and General Hammond that he and other scientists from Kelowna — one of three nations on his world — have been analyzing data left behind by Thanos, the Goa'uld marauder who occupied their planet 3,000 years ago. They've discovered that the fuel-source ore Naquadria, long thought to be native and unique to Langara, is not a natural element. That in itself isn't earthshaking news. But what follows is, literally: It turns out Thanos initiated a process that synthesized Naquadria from the less powerful but more stable element Naquadah while the ore was still in the ground. This started a chain reaction that even now continues to convert the planet's Naquadah deposits into Naquadria. And the conversion process now reaches so deeply into the planet that one particular, immense Naquadria deposit is priming to explode with enough force to obliterate Kelowna and throw the world into nuclear winter.
Major Carter goes to Kelowna with Jonas to help learn how the conversion process works so that they can find a way to stop it. There she meets Jonas' attractive assistant, Kianna Cyr.
Back at SGC, the three representatives of the joint ruling council of Langara arrive through the Stargate: Eremal, the representative from Tirania; Tarthus, the representative from the Andari Federation; and former Ambassador, now First Minister, Dreylock of Kelowna. They meet with Hammond, Colonel O'Neill, Dr. Daniel Jackson and Teal'c to discuss the partial relocation of their people to a world called Madronus, which is willing to accept many thousands of refugees.
Carter and Jonas return to SGC with alarming news. They've discovered the original deposit of Naquadria was created by a freak explosion in the Goa'uld lab where Thanos created the first sample thousand of years ago. This explosion created the first vein, which would have simply reverted back to Naquadah in another 10,000 years had the Kelownans not mined it. But then the Kelownans inadvertently accelerated and intensified the conversion process two years ago, when they tested the Naquadria bomb. In essence, the Kelownans are responsible for the possible destruction of the planet. The news sends the already troubled diplomatic talks into a frenzy.
In Kelowna, Jonas, Kianna and Carter try to devise a way to stop Langara from exploding. Carter suggests setting off a large explosion along a fault line crossing the vein of Naquadah above the large deposit of Naquadria — isolating the advancing Naquadria and breaking it off before it gets any deeper. SGC can supply the nuclear charge — but how can they plant it within 20 kilometers of solid rock? Jonas then takes Carter to a secret hanger where he and his team have built the Deep Underground Excavation Vehicle, or DUEV. Originally intended to mine Naquadria, the DUEV just might do the trick.
The DUEV is not fast enough to reach the vein in time to prevent the explosion, so Jonas proposes the addition of Tok'ra tunnel crystals. The ship is almost ready to get underway when Carter makes a disturbing discovery: The excavator's primary power-distribution circuits are very similar to a Goa'uld design. And it was Kianna who designed them. Jonas is heartbroken, as he was clearly in love with Kianna — who now, it turns out, is a Goa'uld spy. A search of Kianna's quarters turns up a Goa'uld communicator and a supply of the drug she used to mask the presence of her symbiote and avoid detection. Kianna's Goa'uld symbiote then explains that she was dispatched by the system lord Baal to find out why fellow system lord Anubis was so interested in Kelowna.
The Goa'uld tells Carter and Jonas, correctly, that they will need her to pilot the difficult-to-handle excavator; she is willing to help because her race also wants to save the planet for its Naquadria. The mission proceeds with Teal'c along for security and the crew armed in case the Goa'uld tries anything. But in fact she saves the ship when a coolant seal breaks. Jonas still doesn't trust her, even though she tells him he had never actually worked with or loved the real Kianna. Jonas fell in love with a Goa'uld! And she confesses feelings for him, even though he is repulsed by her now.
The excavator passes through a river of molten rock with the extreme heat threatening to compromise hull integrity. Carter diverts power to the shields against the Goa'uld's advice to turn back, and the ship makes it through. But it stops a kilometer short of its target, as the forward drills were damaged by the magma. Jonas suggests they focus the remaining Tok'ra crystals to dig a passage large enough for one person to get through and deliver the nuclear device above the vein. But no one could survive the noxious gases and intense heat — except the Goa'uld, who volunteers to go since the Goa'uld symbiote will protect Kianna's body. She also has another reason: She wants the Naquadria for herself. She never reported the Naquadria's existence to Baal.
Like it or not, they realize the Goa'uld is again the only chance for the mission to succeed. The tunnel is dug. The Goa'uld traverses it, reaches position and arms the device. But the ship's generators have been damaged and power is rapidly falling. It's now at 70 percent. The Goa'uld urges Jonas, Carter and Teal'c to leave her behind, but Jonas refuses, demanding that she start back immediately. They wait for her until the power levels drop to almost 50 percent, after which engine startup will be impossible. Just as it looks as though they must leave her behind, the Goa'uld bangs on the hatch. Jonas takes care of her as Teal'c and Carter pilot the ship up and out of the planet's depths seconds before the excavator's power is depleted. The explosion does its job and Langara is saved.
Back at SGC, the Goa'ld symbiote perishes but saves Kianna, who passes on a message to Jonas that the Goau'ld deeply appreciated what he tried to do for her. Jonas and Kianna step through the Stargate back to Langara, where they will have to get to know each other all over again.
Major Carter has been set up with her brother Mark's friend Pete Shanahan, a cop from Denver who thinks Carter works for the Air Force in a simple research capacity. Their relationship has really started to heat up, judging from their romantic role-playing at a coffee bar this morning and the eye-opening sun dress she has on. Meanwhile, Dr. Daniel Jackson has been visited in his dreams by his former lover, Sarah Gardner, who was possessed by the Goa'uld Osiris in "The Curse."
As Pete, with cop instincts, probes Carter to learn what she really does, Osiris uses a Gou'ald mind link to probe Daniel's subconscious as he sleeps. Daniel dreams about deciphering the tablet that is supposed to lead to the lost city of the Ancients, where the most powerful weaponry in the universe may lie. In these extremely vivid dreams, Osiris as Sarah is coaxing and inspiring Daniel in his office back at the University of Chicago archaeology department, where they met — she as a Cambridge-educated research assistant, he as a professor.
Pete and Carter's relationship reaches a new level, and they sleep together. Pete opens up to her, revealing he's divorced and relating his love of the classic police sitcom Barney Miller. But Carter can't expose Pete to the top-secret classified truth about what she does — or to the danger of it that she alludes to. Pete takes it as a rejection and calls an FBI buddy, Farrity, to do a background check. Pete's pal tells him that the background check turned out so squeaky clean, it can mean only one thing — Samantha is into something top-secret and he shouldn't ask too many questions.
Daniel, increasingly troubled and exhausted by his dreams, finally confides in Teal'c and Carter, and the three try to understand why Sarah — whom, in reality, Daniel pushed away by his long hours working — is now in his dreams, sharing his obsession to find the Lost City. Teal'c has the answer: The Goa'uld possess the technology to probe one's memories. In a meeting with General Hammond and Colonel O'Neill, the trio theorizes that Osiris is beaming undetected into Daniel's home and using a memory probe — similar to one that fellow system lord Anubis had once used on SG-1's Asgard ally Thor. Why not just snatch Daniel and probe his mind? Perhaps to keep SG-1 from being aware of her plan. Moreover, Anubis' device might probe only conscious memory and not the subconscious, and if Daniel has any memory of the location of the Lost City before parts of his memory were wiped by the ascended Ancient Oma, his sleeping mind is where any helpful information might be.
General Hammond approves a plan to stake out Daniel while he's sleeping. Once Osiris has helped Daniel remember the location of the Lost City, Carter will employ a jamming device that will prevent Osiris from beaming out. Osiris will then be tranquilized with a dart — the only thing that will penetrate her personal force field. Once she's captured and unconscious, the Tok'ra can separate the symbiote from its host and save Sarah.
O'Neill, Teal'c and Carter watch Daniel's house from a parked surveillance van, watching Daniel via video. Osiris beams in, but SG-1 can't move in until they get some kind of signal from Daniel that he's remembered the location of the Lost City. Meanwhile, Pete's concern for Carter, coupled with his curiosity, has led him to follow her. He is watching her watching Daniel.
In his dream, Daniel realizes he never knew the Lost City's location. He awakens to find Osiris standing over him about to kill him since he does not possess what she needs. O'Neill and Teal'c move in, having jammed her beaming technology. Osiris knocks O'Neill out with a power blast. Teal'c evades her and checks on Daniel while Osiris leaves the house. Carter exits the van armed with a zat to distract Osiris, when Pete suddenly appears. Osiris blows up the surveillance van and is about to kill Carter and Pete when O'Neill knocks out Osiris with the tranquilizer dart.
It's over. But Pete has been hit. Carter promises that if he makes it through this, she'll tell him everything. At Cheyenne Mountain's infirmary, Sarah, now separated from Osiris, reunites with Daniel. Pete recovers — and Carter, explaining that what she's about to say is classified, keeps her promise.
At the new Alpha Site — the safe-haven planet to which Earth's population can evacuate and where the Tok'ra and Jaffa resistance fighters are based — Jacob/Selmak and his daughter, Major Carter, discuss modifications to a prototype weapon. It was developed by reversing the technology of the re-animation device developed by the Goa'uld system lord Telchak. Right now the weapon is only 70 percent effective against Anubis' super-drone army.
Carter is calibrating a new, more effective power pack for it when, incredibly, a fleet of Goa'uld ships approaches the planet. The location was highly classified, yet somehow, the Goa'uld still found it. Base Commander Colonel Riley (unseen in episode) orders an immediate evacuation to the Beta Site and self-destruction of Alpha.
Afterward, 90 people are unaccounted for, including Jacob/Selmak, Carter and Riley. Colonel O'Neill, Teal'c, Dr. Daniel Jackson and SG-3 search for survivors at the Alpha Site. They find Jacob/Selmak, who gives O'Neill the semi-effective prototype weapon, which has only a few more shots left. Carter has the upgraded and fully charged power pack, but Jacob doesn't know where she is or even if she's still alive.
Twelve more survivors are found and brought back to Stargate Command, where General Hammond questions the second-in-command, Major Green. Jacob/Selmak tells Daniel how he and Carter had been scrambling to download the weapon design into the Matrix Crystal when a drone broke into the lab. Jacob fired the weapon, but it in its present configuration it only stunned the drone. He and Carter retreated with the rest of the survivors, but the drone followed only the two of them. Jacob/Selmak surmises the purpose of the attack was to eliminate the weapon, its plans and its creators. He thinks that since Carter has the weapon design, the drone is still after her. Indeed it is. Back at the Alpha Site, Carter, badly bruised and exhausted, has been evading the deadly super-predator all this time. O'Neill and Teal'c are now following her trail and General Hammond has sent an armed UAV (Unmanned Aerial Vehicle) reconnaissance mini-plane to search for more survivors and attack the super-soldier if need be. He also begins an investigation into the leak that gave Anubis the location of the Alpha Site. Hammond questions M'zel, the free-Jaffa leader who survived the attack, who tells the general of the growing distrust between the Jaffa and the Tok'ra. He explains that Anubis and his drone army are moving against the system lord Olokun and that thousands of Olokun's Jaffa warriors are dying for a hopeless cause. M'zel says the Tok'ra have a spy very close to Olokun who could assassinate him — and with their master dead, the siege would be over and Olokun's Jaffa would be free to join the fight against the Goa'uld. But the Tok'ra leader, Delek, has refused to have his spy help the Jaffa — so M'zel sent a Jaffa team through the Stargate. They have not reported back, and may have been captured and mind-probed. Ditto the Tok'ra spy.
Hammond is shocked to hear the Tok'ra have an operative in Olokun's ranks that he was unaware of under the full-disclosure agreement between SGC and the Tok'ra. Jacob/Selmak doesn't know anything about the Tok'ra spy either. He learns from the imperious Delek that he's been shut out of the political loop by the Tok'ra High Council. Many Tok'ra now believe Selmak has been too corrupted by his Tauri (Earth-human) host, Jacob. Meanwhile, fighting has erupted between the Jaffa and the Tok'ra at the Beta Site, each side blaming the other for the leak. The Alliance is falling apart.
Back at the Alpha Site, Carter sees the UAV and signals to it. The drone sees the UAV, too, and shoots it down. Carter finds the wing of the wrecked UAV with one of its missiles intact, and hotwires it to fire at the drone when it comes into range. It works: a direct hit. But the drone was only stunned. Suddenly, O'Neill shows up with the prototype weapon and fires at the drone. But it's still not enough. Carter hands him the new power pack. O'Neill loads it into the weapon and fires twice. The drone is finally dead.
At SGC, Delek informs General Hammond that the Tok'ra cannot afford to be part of the Alliance anymore, or reveal their covert operations, since they are a dying race and cannot risk losing more of their numbers. M'zel informs Hammond that the Jaffa will also be leaving the Alliance to build their own army and be more self-reliant.
Jacob/Selmak has no choice but to return with Delek to the Tok'ra homeworld. He hopes to rally his supporters and mend the broken fences that have destroyed the Alliance. Sadly, he says goodbye to Carter. Neither know when they will see each other again. The question of how Anubis found the Alpha Site remains unanswered.
On the occasion of the 1000th trip through the Stargate, and in preparation of the Stargate program someday going public, the president authorizes documentary filmmaker Emmett Bregman to chronicle Stargate Command. General Hammond is less than enthusiastic but has agreed to follow the president's orders to the letter — which means cooperating only as far as he has to. Bregman's camera crew consists of two handpicked Air Force personnel, Tech Sergeant Dale James and Airman First Class Shep Wickenhouse — a concession in light of what happened during the "Prometheus" incident, the last time a film crew was allowed on the site. Accompanying them is Colonel Tom Rundell, the Cheyenne Mountain Complex public-affairs liaison.
Emmett tries to get Dr. Daniel Jackson to talk about what it felt like to ascend, but Daniel doesn't remember. A remarkably snotty Colonel O'Neill tells Emmett to send him a memo. From Teal'c he learns ... nothing. But Dr. Lee and Sgt. Siler do offer Bregman a James Bondian "Q moment" with a prototype protective vest, and Major Carter bubbles over with technobabble about how the Stargates' DHDs might be a purer source of power than anything currently on Earth. Emmett is more interested in getting a shot of the 'Gate spinning, but he and his crew are prohibited from getting involved in any ongoing activity, so when the off-world activation alerts sound, the 'Gate room is off-limits to him. Later, Bregman does get some material from the visiting Senator Kinsey — who's now a presidential candidate's running mate — but the only person he's really able to get close to is Dr. Fraiser, with whom he seems a bit smitten.
Meanwhile, on planet P3X-666, the SG-13 survey team led by Colonel Dave Dixon discovers the remains of a city built by the Ancients — a momentous find. Balinsky, the team archaeologist, proudly says, "Dr. Jackson is gonna die when he sees this!" Answers Dixon, "What, again?" But a few minutes later, an airborne robotic probe appears and fires upon them. The survey team manages to destroy it, and sends the remains back for analysis. General Hammond sends SG-3 to the planet as backup.
Teal'c and Carter surmise that the device is the Goa'uld version of a MALP, sent ahead to scan the area. Daniel translates the probe's data, which is in Goa'uld, and discovers that the probe sent a communication before it was destroyed. Before the offworld teams can evacuate, however, they are fired upon by Jaffa arriving in ships. SG-1 is dispatched to the planet, although it looks like an ambush. Needless to say, Bregman is not invited along. To be continued….
Documentary filmmaker Emmett Bregman and his crew, Tech Sergeant Dale James and Airman First Class Shep Wickenhouse, are bumped from their scheduled time to tape shots of the Stargate since Bregman is not allowed to shoot "ongoing activity." And a lot of activity is going on: SG-1 has just gone through the 'Gate to planet P3X-666, along with Marine Combat unit SG-5 and Dr. Janet Fraiser with two medical technicians.
At an editing console with his crew, Bregman reviews all the interview footage he's gotten so far. Colonel O'Neill and General Hammond are still unwilling to be part of, as Hammond put it, Bregman's "little reality show." Because of all the restrictions placed on him, all Bregman has is a bunch of talking-head interviews. "Where's the equivalent shot of [Apollo 14 commander Alan] Shepard playing golf on the moon?" he asks rhetorically. "This is unbelievably boring."
But what's happening on the other planet is far from boring: The SG teams and Fraiser have 'Gated into an ambush. Colonel Dixon of SG-13 had reported only that six Jaffa had invaded the site, but now they are facing an army of them, with Alkesh gliders dropping plasma bombs left and right. A retreat is in order but Dr. Fraiser needs more time to stabilize a patient before he can be moved. O'Neill, trying to buy her that time, goes to take out an approaching Jaffa — and he takes a blast square in the chest.
O'Neill is down — smoldering and unmoving.
Back at Stargate Command, Bregman is interviewing a technician about the equipment when an incoming-wormhole alert sounds. Hammond orders Bregman away, but the filmmaker takes the camera in his own hands and keeps shooting as a covered gurney is wheeled by. Then he sees Carter coming down the hallway, where the crew is authorized to shoot. She's crying and shouts, "Shut that damn thing off!" When Sgt. James complies, Bregman turns livid. "You turn that camera off when I tell you to turn it off!" he orders, and goes on to explain: "You force the press into the cold and all you'll get is lies and innuendo, and nothing is worse for a free society than a press that is in service to the military and the politicians. Nothing!"
Shortly afterward, Bregman hears that someone may have died — and a shaken Colonel Rundell, the public-affairs liaison, says it was O'Neill who was wheeled in on the gurney.
Later, the mood is solemn at SGC as Hammond asks Major Carter to give the eulogy at the memorial service. At the same time he tells her to cooperate with Richard Woolsey, who was sent by Senator Kinsey, chairman of the Intelligence Oversight Committee, to review Hammond's command decision to try to rescue SG-13, and to interview Carter, Teal'c and Dr. Daniel Jackson. A former government attorney now with the National Intelligence Division (NID), Woolsey gets little information from any of them, except that all involved acted bravely.
Bregman asks Daniel whether he captured any of the offworld events with the videocamera he always takes along. In flashback, Daniel remembers helping Dr. Fraiser stabilize the badly wounded Airman Wells, whose wife is expecting a baby. A pensive Daniel then tells Bregman to get out. Meanwhile, Hammond and Woolsey face off over the money being spent on a war the American people know nothing about. Hammond, tired of the NID's secret memos and harassing investigations, begins to believe there should be a record of what goes on at SGC beyond the classified reports. He later suggests to Daniel that letting Bregman see the offworld tape is the right thing to do.
Daniel does so. And a shocked Bregman sees that Dr. Fraiser, while stabilizing her patient, was shot and killed by a Jaffa blast.
Later, in the infirmary, Carter visits the recovering O'Neill. Later still we learn that Airman Wells will be fine as well; Dr. Fraiser's decision to remain and stabilize him saved his life — and he and his wife have named their baby girl Janet in her honor. Daniel insists that Bregman use the footage of Dr. Fraiser's sacrifice, as a testament to her courage and dedication.
At the memorial service, Carter delivers the eulogy with the help of some sentiments from Teal'c. Instead of talking about how Janet Fraiser gave her life for her country, she instead reads the names — starting with her own — of all the men and women whose lives Dr. Fraiser saved.
Later still, when General Hammond sees Bregman's finished documentary, he is overwhelmed and admits he was wrong. He tells Bregman this is a fitting testimonial to those who have given their lives for the Stargate program. But Bregman says there's still one thing missing that could make a big difference. Hammond says he'll take care of it. And soon Colonel Jack O'Neill is at last ready to go on record for the sake of the program and the men and women in it.
Agent Malcolm Barrett of the National Intelligence Division has called SG-1 (minus Colonel O'Neill, who is still recovering from the recent firefight on P3X-666) to Los Angeles, where a massacre has taken place. The locale, a seemingly abandoned warehouse, is actually the site of a rogue NID sleeper cell. The body count is 32 personnel, ranging from scientists to cleaning staff. Barrett has the killer — a fragile-looking young woman named Anna — in custody in a Plexiglas cell. There is also one survivor, a German scientist named Dr. Keffler.
Barrett shows SG-1 a security tape of the massacre, depicting Anna in deadly action. When eventully found, she was cowering in a corner. Barrett placed her in the cell — where she said "they" had kept her. He then takes the team to a room of Egyptian Goa'uld artifacts — none of which Dr. Daniel Jackson has seen before. Teal'c recognizes the markings on a scepter, which indicate it belonged to a powerful Goa'uld named Sekhmet, once loyal to Ra, the very first Goa'uld system lord humans had encountered (in the movie Stargate). Barrett presumes the artifacts to have been originally uncovered by Germany, since the files he has on Keffler say he is the son of a convicted Nazi war criminal.
While Teal'c and Daniel explore the artifacts, Major Carter and Barrett interrogate Keffler. The smarmy scientist is not forthcoming, and all Barrett found on him were some nitro pills for his heart condition and a remote for his car alarm.
Barrett next takes Carter to a lab where he shows her three jars, each holding a semi-human mutated embryo. Carter takes a crack at the lab's encrypted computer files to try to learn what this experiment was about. Meanwhile, Daniel and Teal'c find an ark with four knobs that can be turned as though they're some sort of combination lock.
Daniel goes to speak with Anna, who claims she did not kill anyone. She also claims Keffler created her. Pressed further, she says that the many nightmarish charcoal sketches she's done and has taped all over the walls of her cell come from her dreams. Daniel notices that one of the drawings is of the ark cover — with the knobs turned to specific positions. He takes the drawing back to the artifact room and moves the knobs to match the drawing. The lid unlocks — revealing what Teal'c says is a Goa'uld explosive device that will detonate within the next 16 hours with enough force to level Orange County.
Meanwhile Carter has hacked into Keffler's files and learns that one of the artifacts was a canopic jar — a type used in ancient Egypt to hold the mummified remains of internal organs, and which here contains a preserved Goa'uld symbiote. Keffler had spliced human ovum with Goa'uld DNA from the symbiote to create an adult human-Goa'uld hybrid, maturing it quickly using Goa'uld nanite technology stolen from Area 51. He was trying to create a human that would know everything a Goa'uld would know. After 45 failed attempts, Anna was born.
When confronted, Keffler defends what he did as an attempt to learn the secrets of the Goa'uld in order to find a way to destroy them. But the experiment resulted in Anna having a second personality — that of the Goa'uld Sekhmet, who emerges when Anna blacks out.
Daniel studies video logs of the experiment and discovers Keffler was able to bring out Sekhmet anytime he wanted by shocking her with the device he said was his car-alarm remote. He can control her or kill her with it. He let her out to kill the other scientists, who were going to blow the whistle on the inhuman research he was conducting. But then Sekhmet activated the bomb, so that she could blackmail Keffler into halting her rapid genetic growth and free her. But Keffler only led her to believe he could do that: In actuality, the Goa'uld DNA will eventually overwrite the human DNA and Anna will die a horribly painful death. Keffler, admitting all this, says he placed a capsule of biotoxin at the base of Anna's brain, and planned to trigger the poison with the remote device when the time came so that she wouldn't suffer.
Meanwhile, in an effort to reprogram the bomb, Dr. Lee from Stargate Command accidentally causes the countdown to accelerate to two hours. It's now up to Daniel to get Anna to tap into her Goa'uld side and reveal the deactivation sequence. He gets Anna to meditate — but when Sekhmet emerges she is furious and uses the meditation candle Daniel gave her to set fire to her cell. She escapes, knocking out Daniel and the two guards in the room and taking one of their guns. Keffler likewise overcomes his guard. Sekhmet knocks out Barrett and takes Keffler's remote trigger device.
When Daniel awakens he finds one of Anna's drawings that shows the bomb's deactivation sequence. He gives it to Dr. Lee and Teal'c, who use it to stop the countdown.
Anna/Sekhment confronts Keffler. But it is Anna who is in control. She kills Keffler with the gun and, knowing she is doomed, triggers the poison capsule in her brain herself.
Daniel arrives on the scene, but Anna could not have been saved. Still, she has spared herself a painful death, and rid the world of an evil man. Without knowing it, Keffler had created a hero.
As the newly elected President Hayes steps into the Oval Office, he finds General Francis Maynard, Chairman of the Joint Chiefs of Staff, waiting for him. Maynard is there to brief Hayes about the Stargate program, of which Hayes has been unaware until this very moment. Hayes storms into now Vice President Kinsey's office, angry that Kinsey knew about Stargate Command and never told him. Kinsey claims he was under a special executive gag order — and that now he and Hayes are finally in the position to clean house at SGC by replacing General George Hammond and SG-1. But Hayes says he's going to need convincing. He learns that Kinsey, while head of the Senate Appropriations Committee, tried to shut down SGC. But General Maynard informs him how Kinsey later almost convinced the other nations of the world, during a full-disclosure meeting at the Pentagon (in "Disclosure") to give him control of the Stargate program. The President meets with Kinsey, General Maynard and Kinsey's investigator, attorney Richard Woolsey, who has been brought him in to present a case that Hammond and SG-1 need to be replaced. Woolsey cites SG-1's insubordination when they ignored orders to suspend all offworld travel pending a review of the Stargate program (in "Within the Serpent's Grasp"). Two years later, the team refused Hammond's own order for SG-1 to stay put (in "Upgrades"). General Maynard counters that in the latter case, SG-1 managed to head off an invasion by sabotaging a mothership the Goa'uld would have eventually used against Earth. He also reminds Woolsey that SG-1 was under the influence of an alien device at the time. Which brings Woolsey to the number of times SG-1 has fallen under alien control. He cites Major Carter's implantation with a Goa'uld symbiote (in "In the Line of Duty") and becoming host to an alien virus (in "Entity"). There was also Dr. Daniel Jackson's death and ascension into a higher life form (in "Meridian"); and the fact that Teal'c — an alien and one-time Goa'uld soldier — now possesses full security clearance at America's most classified facility. Maynard counters that Teal'c earned that trust — and Woolsey notes that this trust almost cost SG-1 dearly when he rejoined the ranks of System Lord Apophis (in "Enemies"). Maynard points out Teal'c had been brainwashed. Woolsey just considers that another example of how often SG-1 has shown a vulnerability to alien influence. He says Colonel O'Neill has been infected by alien contagions a half-dozen times, was experimented upon by extraterrestrials another half-dozen times, had his memories manipulated on numerous occasions and (in "The Fifth Race") had the entire repository of an ancient alien database effectively downloaded into his head. Hayes, impressed upon hearing these extraordinary reports, can't believe what SG-1 has endured. Woolsey maintains that is precisely the point: "How can we trust these individuals to protect our planet given everything they've been through? Who's to say they're completely free of these influences?"
After a break — during which Kinsey reminds Hayes he wouldn't have been elected without Kinsey's support — Woolsey brings up the number of times General Hammond and SG-1 demonstrated "shockingly poor judgment" by placing themselves, the base and Earth itself in jeopardy. He cites how the effects of an alien device found its way into the civilian population (in "Sight Unseen"). Woolsey goes on to imply that Hammond and SG-1 have allowed their personal feelings to influence command decisions, citing the time Hammond held off closing the iris, despite an incoming barrage, until SG-1 was back safely (in "Chain Reaction"). He also brings up Colonel O'Neill and Major Carter's close relationship — at which point Kinsey jumps in to denounce it as highly inappropriate and, if you "read between the lines" of the mission reports (particularly that of "Paradise Lost"), more than it appears to be. The President has heard enough and ends the meeting. That night, Woolsey tells Kinsey he's worried the President will side with Hammond and SG-1. Kinsey tells him it doesn't matter. "Things happen," he says insidiously, implying that — even if it involves making someone "disappear" — he will get his way. The next morning, General Maynard sees that the President is leaning toward Kinsey's point; Hayes believes that the Stargate program will eventually go public, and when it does, he wants to be able to say he cleaned house when he took office. But Maynard — describing System Lord Anubis' recent rise to great strength and his development of a supersoldier army (in "Evolution," Part 1) — tells him it is imperative that Hammond and SG-1 remain in place. Earth's best hope lies in finding the Lost City of the Ancients, which holds the weaponry that could defeat Anubis. SG-1 believes it may have found it on the planet Abydos (in "Full Circle). Maynard urges the President to let SG-1 continue on this path. But Hayes says it's not that simple. The President knows that if he crosses Kinsey on this issue, he'll leave himself wide open for retaliation. Even as Commander-in-Chief, he may not be able to protect SG-1. Later, a shaken and troubled Woolsey confesses to Maynard his own grave concerns about Kinsey. Maynard encourages Woolsey to find hard proof of any perfidy. Woolsey reasons that Hammond — who unexpectedly resigned from Stargate Command at one point and then returned — was blackmailed by Kinsey, and is only back because he has proof of Kinsey's involvement with rogue elements of the National Intelligence Division (NID). When Woolsey visits Hammond at Stargate Command, Hammond sees that Woolsey is on the level and gives him a copy of the incriminating computer disc (retrieved by O'Neill in "Chain Reaction"). Woolsey brings the disc directly to the non-commital President, hoping that, one day, history will show he tried to do the right thing.
Dr. Daniel Jackson makes an amazing discovery while translating the Ancient writing on the colonnade that SG-2 discovered on planet P3X-439. The writing talks about a library of knowledge and Daniel suspects it contains a repository — the same type of device that once downloaded the Ancients' knowledge into Colonel O'Neill's brain and would have cost O'Neill his life had not the Asgard intervened and removed the alien data from his mind.
However, SG-2 spots a Goa'uld reconnaissance drone while on the planet, which means that System Lord Anubis is also aware of the repository's existence. SG-1 must get to it first, so that they can, once and for all, learn the location of the Lost City of the Ancients and use that race's advanced technology to save the galaxy from Goa'uld oppression. Should this knowledge fall into Anubis' hands, nothing will be able to stop him. This time, SG-1's plan is to remove the repository rather than downloading it into a human, and then to bring it back to Earth and find a safe way to retrieve the data. The Asgard and other alien allies are not responding, so Stargate Command is on its own.
SG-1, -2 and -3 are dispatched to P3X-439 where Daniel and Major Carter try to remove the repository from the monument — with no luck. Suddenly, a full Gou'ald attack rocks the monument, as Alkesh fighter-ships carpet-bomb the area. There is no choice: Someone must download the Ancient knowledge into his or her brain. O'Neill assesses that Carter is too valuable, and that Daniel will be needed to translate the Ancient language that whoever goes through with this will be speaking when their consciousness is taken over and replaced by that of the Ancients — resulting in neural overload and death. So he does it again: O'Neill steps up to the repository, where the face-hugging arms come out, grab O'Neill's head and pump Ancient knowledge directly into his brain.
The teams return to SGC, where they must face the inevitable: O'Neill's human consciousness will soon be obliterated and he will begin speaking in Ancient. Not long after that, his human physiology will no longer be able to handle the strain and he will die.
Meanwhile, in Washington, newly inaugurated President Hayes has found a replacement for General Hammond in an attempt to put a friendly face on the Stargate project when it goes public. She is Dr. Elizabeth Weir, a multilingual political negotiator who will be able to confer with leaders of other countries who will no doubt want control of the Stargate. Indeed, there's someone right in the Administration who wants control of the 'Gate — Vice President Kinsey, who has pressured the President into this bold move. Kinsey informs Weir in no uncertain terms that he is best person to have on her side when she takes over SGC — and the last person she'd want to cross. As Dr. Weir leaves, the President welcomes a visitor named Bonnie into the Oval Office.
The President, completely aware of Kinsey's history with Hammond, informs the General that he does not want him to retire. He knows full well that Hammond's experience will remain invaluable in the near future. But politics is politics. All offworld teams are recalled and the Stargate is shut down for a three-month review process.
No one at SGC is happy about that or about Dr. Weir taking command. For her part, Weir doesn't intend to allow Kinsey to use her as a puppet to control the Stargate. She is also aware of O'Neill's impending death and intends to deal with it. Kinsey prefers O'Neill and the rest of SG-1 gone. But O'Neill's knowledge of the Lost City is crucial to winning the war against the Goa'uld.
And they are now an immediate threat to Earth: Teal'c's mentor, Bratac, arrives through the 'Gate with the dire news that Anubis knows Earth has the repository of Ancient knowledge, and is about to attack. In three days, he and his army of Kull Warrior supersoldier drones will arrive. Kinsey thinks this is all a ruse to keep the program running and SG-1 in place. But Weir knows better. — and since the knowledge in O'Neill's head is the only chance of saving Earth … well, Kinsey's private agenda be damned. She's in charge of SGC now, not him. She believes that the threat to Earth is real and that America owes Colonel O'Neill the chance to make might what be his ultimate sacrifice. Judging from the Ancient word that issues from his lips, the time for that sacrifice is coming soon.
Bratac returns home to Chulak. Teal'c goes with him in the hope of procuring warriors and ships to protect Earth. O'Neill is about to give Teal'c the "if I don't see you again speech." But Teal'c is certain they will. And the rest of SG-1 hopes he's right. To Be Continued….
A lot is riding on Colonel O'Neill's "fron" — the Ancient word for head: Having had the repository of Ancient knowledge downloaded into his mind, he now, hopefully, will soon know the secret location of The Lost City of the Ancients, where the power to defeat Anubis is thought to lie. And with Anubis and his super-drone army rapidly approaching Earth, SG-1 can only pray O'Neill will go Ancient soon — even though everyone sadly knows that when that happens, O'Neill's physical composition won't be able to stand the transition for long, and he will die.
And the process seems to have already begun: Dr. Daniel Jackson notices O'Neill has written some Ancient words into a crossword puzzle trying to finish while he can still read English. Daniel discerns that they are not words but syllables of two words — Praclarush Taonas, the planet where the Lost City lies. But Daniel also figures out that each syllable also comprises the planet's 'Gate address — one they tried dialing two years ago without success. That means the gate is buried. Major Carter can use the address to chart the planet's position in space, but they'll have to travel by ship. Dr. Elizabeth Weir — the newly installed head of Stargate Command — reminds them that the Prometheus space-jet can't be taken now, as it is Earth's last line of defense against Anubis.
Teal'c and Bratac, however, have procured an unarmed interstellar cargo ship on Chulak. The ship was stolen from Anubis by a free Jaffa named Ronan who joins them in their mission. They and SG-1 travel to Praclarush Taonas with a load of equipment O'Neill has packed without knowing why. O'Neill also senses they're not traveling fast enough, and he modifies the engines in a way even Carter can't fathom. She tells O'Neill she has authorization to take control of the team if she determines his brain has become too overwritten with Ancient consciousness.
He tells her to do it now. Anubis begins the attack on Earth. An American aircraft carrier and a battle cruiser are destroyed by one of his ships. Communications across the planet are also knocked out. The Machiavellian Vice President Kinsey runs to SGC to 'Gate to the Alpha site. At the White House, President Hayes — who has been meeting with top officials including General Hammond and spoken with a projection of Anubis himself — tells his team to stay to fight. He orders Prometheus to launch.
SG-1 arrives at its destination to find the surface of the planet is molten. Carter surmises that since O'Neill packed Hazmat suits, he knew what they were going to find. He points out a bubble-like anomaly that Carter identifies as a perfectly formed sphere of molten rock. SG-1 rings into the structure as Bratac and Ronan move to a safe distance from the planet's intense heat. O'Neill walks to a throne-like chair, takes off his Hazmat hood, sits down and places his hand on an armrest control. The atmosphere in the structure becomes safe. O'Neill then activates a holographic map that shows Earth and says two words: Terra and Atlantis. The location is Antarctica. O'Neill then puts his hood back on and deactivates the map and the atmosphere control. He also activates a panel in the floor, behind which is a power source that they remove.
SG-1 signals Bratac to ring them out before the structure collapses. But Bratac has been severely wounded by Ronan, who has turned out to be an Anubis spy. Bratac kills Ronan, and though weak, still manages to activate the rings. O'Neill, who now seems to possess the healing power of the Ancients as well as their knowledge, heals Bratac. At SGC, Kinsey demands that Dr. Weir allow him to escape to the Alpha site. But an unscheduled offworld activation occurs. Weir closes the iris just before a massive explosion occurs on the other side. Anubis has dialed in. Kinsey isn't going anywhere. He and Weir face off over whether or not to send Prometheus to cover SG-1 at Antarctica. Kinsey tries to relieve Weir and take command, but the President accepts his resignation via speakerphone and approves Weir's suggestion to send Prometheus to Antarctica.
In Antarctica, at the point O'Neill indicted, the cargo ship burns a hole in the ice with the ring transporter that O'Neill has radically modified. Anubis' fleet arrives and moves in for the kill. Suddenly, Prometheus, under the command of General Hammond, arrives with a fleet of F-302 fighter jets. Though outclassed and outgunned, Hammond buys SG-1 the time it needs to ring under the ice. There, O'Neill finds a chamber and utters an Ancient word that Daniel translates as "sleep."
Anubis' super-drones ring in and engage SG-1 in a firefight. O'Neill goes to a chair and platform much like the one on the fiery planet, removes a burnt-out power supply from the platform and replaces it with the new one. He then activates the chair and platform — and thousands of energy beams shoot upward into space, avoiding Prometheus, which has engaged Anubis' mothership — and destroys Anubis and his fleet! Back in the ice cave, it is now obvious that it, like the outpost on the molten planet, is not the Lost City. O'Neill, drained to exhaustion, indicates that he needs to go into the chamber he pointed out earlier. The chamber activates, freezing O'Neill as he says, "Aveo ... amacuse," which is Ancient for "Goodbye."