The Wraith, or at least one Hive ship, knows of Atlantis’ survival. They learn Michael is on the ship, and finally communicate with him. He tells them that too many Wraith awoke to too few humans, and a civil war then broke out amongst the Wraith.

Michael’s faction wants to get a hold of Dr. Beckett’s retro virus in order to fight the other Wraith factions. They say they can survive by feeding on Wraith who have been converted to humans. Although the Atlantis team is reluctant to believe the Wraith’s motives, they must take the risk to help Wraith in killing other Wraith.

Things go horribly wrong, as the SGA finds the Wraith ship has a totally different agenda. Can Atlantis survive this betrayal? Things look dire for Atlantis! After all, they have given away their Wraith killing information, as well as the fact the Wraith know that Atlantis still exists.