In the penultimate issue of Stargate Atlantis Singularity, the Atlantis team is faced with the final agenda of the rogue Ancient, Janus. His machinations over time have led to the galaxy teetering on the brink of destruction and only the intrepid Atlantis crew stands between him and his ultimate conquest. This arc ties all of the Stargate Atlantis issues to date together and delivers a powerful tale of revenge and desperation.