Stargate Atlantis: Season 3, Episode 10

3 - 10: The Return, Part 1

While testing the new McKay-Carter intergalactic gate bridge, the Daedalus detects an Ancient Atlantian warship, traveling at just below light speed and heading towards Earth. Damaged in battle during the war with the Wraith, the Ancients aboard this ship fled the Pegasus galaxy and have spent thousands of years in stasis. Back on Atlantis, the now awoken Ancients meet with General O'Neill and Richard Woolsey. They thank the Stargate team for taking care of the city in their absence, but ask them to vacate Atlantis immediately.