07.09 Episode 141
Airdate: August 8, 2003

Jay Felger and his research assistant, Chloe, demonstrate a prototype plasma weapon, but the test goes awry, and with too many screw-ups on his record, Felger is about to be fired. In desperation, he promises that he's on the verge of a major breakthrough, and Hammond grants him 24 hours to prove it. Felger has no choice but to grasp at a previously discarded idea, Avenger, a computer virus that will allow the SGC to target and disable a remote stargate. Hammond approves the project with Carter's collaboration, and Felger is ecstatic. His infatuation with Carter is so powerful he doesn't even notice Chloe's interest in him.

Hammond authorizes a test of Avenger on P5S-117, a mining planet controlled by Ba'al, and at first all seems to go well. However, problems soon arise. O'Neill and Teal'c, under fire from an al'kesh on P3C-249, cannot establish an outgoing wormhole. Daniel, trapped amid rising flood waters on P3L-997, also cannot dial out. The Tok'ra report that multiple gates are shutting down. Apparently Avenger has triggered an automatic system-wide correlative update of all DHDs, and the entire gate network is soon offline. All attempts to reverse the virus's damage fail, and only Earth's dialing computer is capable of dialing out.

Carter and Felger determine that their only option is to travel to Ba'al's planet and neutralize the virus at the source. On P5S-117, Felger discovers that someone, probably Ba'al, has tampered with his original program. The new virus, not Avenger, caused the gate network to shut down, but now the unexpected modifications must be neutralized as Felger and Carter come under fire from Ba'al's Jaffa. Suddenly, O'Neill and Teal'c arrive overhead in a commandeered al'kesh, and defeat the advancing Jaffa. Felger is able to redeem himself, and he successfully modifies and uploads the antivirus that restores the gate network, and his reputation, at last.

Written by: Joseph Mallozzi and Paul Mullie
Directed by: Martin Wood

Guest Starring: Patrick McKenna as Jay Felger, Jocelyne Loewen as Chloe, Gary Jones as Technician

Reference: Alkesh, Automatic Correlative Update, Avenger, Chloe, DHD, Jay Felger, P3C-249, P3L-997, P5S-117, Planets, Plasma Weapon, Rebel Jaffa, Stargate, Weapons, Major Wood