A Russian transport vehicle is ambushed and its valuable cargo, a captured Jaffa, is taken by force. At nearly the same time, Major Carter is ambushed while getting into her car and abducted by mysterious men dressed in black. When Carter goes missing for several days, General Hammond authorizes O'Neill and Daniel to investigate her disappearance. O'Neill's investigation takes a strange twist when he is contacted by the former NID operative, Col. Mayborne. Desperate to find Carter, O'Neill must trust his old nemesis in the hopes of bringing Carter back alive. Working with Maybourne, O’Neill, Daniel and Teal’c discover information that leads to a mysterious hospital and the nefarious workings of a reclusive billionaire. Can SG-1 rescue Carter from the doctors’ deadly experiments and discover the connection to the captured Jaffa?
An alien ship is spotted heading toward Earth, and from its unique energy signature, SG-1 determines that it is related to the pod found in Montana the year prior: Marty the alien's pod (episode "Point of No Return"). They estimate that the ship will reach Earth in three days and set out to find Marty and see what he knows about it. When they do, they find that he has become a Creative Consultant for a brand new Sci-Fi television series called "Wormhole X-Treme." The series was created from a script that Marty wrote and the story line bears and eerie resemblance to the Stargate program. General Hammond's not overly concerned, believing that such a show will give SGC plausible deniability in the event of a real leak in the future. O'Neill is sent to find Marty on the "Wormhole X-Treme" set as the show's Air Force Technical Advisor. But when O'Neill connects with Marty he's surprised to discover that Marty has no memory of their past relationship or of the real Stargate Command. O'Neill has to get to the bottom of Marty's sudden memory loss and see if it is somehow connected to the impending arrival of this alien ship.