The United States has finally put to good use those two Goa'uld death gliders taken from Apophis' ship ("The Serpent's Lair"). After studying the ships for just over two years, Area 51 personnel have created a hybrid vessel that looks like a Goa'uld death glider on the outside, and a jet plane on the inside. Teal'c flies a demonstration of the new X-301 interceptor, impressing Pentagon representative Lt. General Vidrine.
The test continues as Jack boards the plane. He and Teal'c will demonstrate the ship's weapons capabilities, firing on target drones. General Hammond, Vidrine, Major Davis and the rest of SG-1 monitor the test from the S.G.C.
But all does not go as planned. Teal'c loses control of the ship, and the vessel climbs out of the atmosphere and races into space. The voice of Apophis himself booms out at them, telling them that he had installed a device in the gliders in case Teal'c ever found himself in one again. The vessel is programmed to return to Apophis' home planet; it is Teal'c's punishment, doomed to die in the coldness of space. Their ship rushes away from Earth at a million miles per hour.
Communication with the S.G.C. lags for several minutes as the ship gets farther away from Earth. Sam and Daniel work frantically to try and find a way to save their teammates. Carter does not want them to try and deactivate Apophis' homing device, believing it probably has a built-in safeguard.
A failed attempt to use the ship's rockets to alter their course and slingshot around Jupiter leaves the ship damaged, and Teal'c and Jack with only a day's worth of air. They shut down all nonessential systems to conserve power.
Daniel contacts the Tok'ra and the Tollan. Neither have ships available that are close enough; but there is a Tok'ra operative undercover on a nearby Goa'uld world. The Tok'ra refuse to disclose who the operative is or where he is -- but Sam deduces the location, as it is the only Goa'uld-controlled world within a day's travel of Earth.
She and Daniel go through the Stargate to P2C-527, and find Jacob Carter. They convince him to abandon his mission and race to the glider's location.
Meanwhile, Jack and Teal'c have come to the disturbing conclusion that they will likely not survive the wait. They are asked to hold out for another 24 hours, but have less than 12 hours of oxygen remaining. Teal'c expresses his thanks for O'Neill's friendship, and enters a deep state of Kelnorim -- Jaffa meditation -- to conserve on oxygen.
Jacob overburdens the hyperdrive engines of his Tok'ra scout ship, and they finally go out. Daniel, Sam and Jacob are stranded in a "very bad part of town" -- two Goa'uld motherships close in on them. Jacob and Sam move to repair the drive, while Daniel is left with the task of keeping the Goa'uld busy.
He is successful, and the three of them escape seconds before death gliders attack.
All is quiet in the cockpit of the X-301, as Teal'c meditates and Jack tries to sleep. The ship continues on its course away from Earth's solar system and into deep space. On Earth, General Hammond and Major Davis can do nothing for them -- only wait for Sam and Daniel to come to the rescue. Through his fatigue and oxygen deprivation, O'Neill makes occasional reports back to Earth.
Finally, the rescue team arrives in the Tok'ra scout ship. They find both Teal'c and O'Neill unconscious, and pray that they are still alive. Radio communications cannot wake either of them, so Jacob uses the ship to nudge the glider. The jolt wakes up Colonel O'Neill, who is delirious due to oxygen deprivation.
Carter convinces the two men to trust her, and take a very literal leap of faith. They breathe the last of their oxygen and blow the hatch, pushing off toward the Tok'ra ship above them. The ship does not have the technology to simply transport them aboard, nor is the cargo bay large enough to accommodate the X-301. But if Jack and Teal'c can get within five meters of the ship, the on board transport rings can grab them.
The plan works, and the two are saved. They give their thanks to Jacob for his help, and radio their success back to Earth.