12. Outsiders

Complete story — includes the ending

Sheppard and his team meet a man and a woman named Sefaris and Novo, two of a group of survivors from the planet Balara who survived the Hoffan plague and are now living with the people Dr. Beckett is helping. However, the Balarans face betrayal by their host village when the Wraith come hunting for them. The Wraith capture Beckett and McKay and force them to work on a system to detect survivors of the Hoffan plague, but it allows Beckett to determine he has the drug too and he uses it to kill the Commander and escape. The two disable the hive ship's weapons and escape, allowing Sheppard and the others to defeat the Wraith on the planet and escape with the villagers and the survivors through the Stargate to Atlantis where the people are relocated.