The team finds a world whose people are on the brink of a discovery that may make them immune to the Wraith feeding.

McKay’s efforts to harness the energy of an alien planet’s atmosphere allows for a return trip to Earth — but the team may not be able to return to Atlantis.

The team finds themselves in mortal danger when their Puddle Jumper ship becomes lodged in the Stargate.

After a series of run-ins with the Wraith, the team begins to suspect their Athosian allies of having a spy in their midst.

Sheppard tries to convince Weir to mount a rescue mission to free Colonel Sumner, Teyla, and the others captured by the Wraith.

A new Stargate team embarks on a dangerous mission to a distant galaxy, where they discover a mythical lost city — and a deadly new enemy.