Stargate Atlantis Season 4
Executive producers: Robert C. Cooper, Brad Wright, Joseph Malozzi, Paul Mullie
Original air dates: September 28, 2007 – March 7, 2008
Mission briefing. Atlantis is drifting between star systems, with McKay and Zelenka trying desperately to keep everyone from dying through various manipulations of the power and the shield. Meanwhile, Weir is dying, and the only solution that Keller can come up with involves activating the nanites that are still in her system. Sheppard thinks this is a terrible idea, but they do it anyhow, as she’ll die otherwise. Weir herself thinks it’s a bad idea when she’s revived.
The city needs a ZPM or they’ll be drifting forever, but they have a jumper that can make it to a planet—specifically, the Asuran homeworld. Weir is now plugged into the replicators, so she helps them get the ZPM, and also keeps Oberoth at bay. But in the end, she is taken by the replicators, even as the others escape with a ZPM.
As an added bonus, McKay has altered the replicator base code so that they will do what the Ancients originally built them for: to fight the Wraith. A Wraith-replicator war proceeds to break out in the Pegasus galaxy.