In the action-packed second season, after an attack by the Wraith and new contact with Earth, the Atlantis base faces key changes in leadership and personnel. Lt. Aiden Ford who was attacked by the Wraith and injected with an addicting enzyme leaves Atlantis and is found living on a distant planet.

A new Stargate team embarks on an incredible journey to the lost city of Atlantis. The team must battle to defeat a gruesome, powerful new enemy known as the Wraiths, quickly forge new alliances... and simply survive. Their success will dictate whether they live long enough to gather the resources needed to return home from the intergalactic adventure of a lifetime...