Watch Stargate Atlantis: Fans' Choice for Free: How to Stream the Movie Online at 123Movies. . The exhilarating, feature-length pilot episode, "Rising", sends a brilliant team of scientists through a Stargate to the legendary city of Atlantis. But not only is the city about to be engulfed by ocean water, an enemy appears who threatens everyone in the Pegasus Galaxy! And in the white-knuckle, lengthened "Enemy at the Gate" from Season 5, as the team tries to disempower Wraith hive ships, the Wraith discover coordinates that will allow them to destroy Earth!