Ben 10: Alien Swarm

When our world is threatened with an imminent invasion from an alien menace, the fate of the Earth falls onto the shoulders of 15 year old Ben Tennyson.  However, an outsider turns to Ben and asks him to help her search for her father, who has been abducted by the swarm.  Heroic Ben agrees to help her, even though it means breaking ranks with Gwen, Kevin, and Grandpa Max and risk losing against the toughest foe he has ever faced.  The stakes are high and the action is high voltage as our heroes fight the alien swarm.