In this action-packed fifth season sparks fly when Woolsey becomes the new leader of the Atlantis team. Meanwhile, McKay faces difficult personal challenges; Teyla must balance her roles as mother and warrior; Ronan's past returns with a vengeance, and Keller finds peril, then help, from an unlikely source. A provisional relationship with the Wraith takes a shocking turn and new adversaries test the team's courage and resolve like never before.