Stargate Atlantis: Season 3, Episode 19

3 - 19: Vengeance

After helping relocate the Taranans, the Atlantis team realizes they haven't heard from the village in an unusually long period of time. Wondering what happened to them, Weir sends Sheppard and his team to go investigate their village. Once there, it appears the Taranans have just abandoned their village until Rodney McKay detects life signs well beneath the surface in the remnants of the previous village's underground industrial complex.