Michael and his Wraith faction arrive at Atlantis to propose an alliance, hoping to use the retrovirus to transform their Wraith enemies into prey.

Sheppard’s team meets a civilization about to be destroyed by a super-volcano, and is trapped there when the Stargate is destroyed during the evacuation.

The Daedalus is infected by a Wraith computer virus, while members of the expedition hope to return to Earth.

The Daedalus arrives to defend Atlantis from the Wraith onslaught, but it may not be enough when the team discovers that an even larger armada is on the way.

Rodney McKay is reunited with his estranged sister back on Earth, who has given up a brilliant career as a scientist to raise a family.

With a group of Wraith hive ships on the way to Atlantis, the team searches for a place to flee and a way to destroy the city. McKay leads a…

Max runs for fourth-grade class president — but his girlfriend Rose is running, too. DJ tries to make up with CJ, and Steph picks a fight with a clown.

As the Ori invade the Jaffa planet Chulak, Vala and Daniel must deal with their leader: Vala’s young daughter, rapidly aged by the Ori to serve their purposes.

As the Ori invade the Jaffa planet Chulak, Vala and Daniel must deal with their leader: Vala’s young daughter, rapidly aged by the Ori to serve their purposes.