The worst day of Detective Mark Corley's life began with posting bail for his son, Trent, and continued with the horrific sight of an invasion of alien ships, snatching thousands of people right from city streets, subways, and skyscraper windows. Trying to find his abducted son, Mark infiltrates the alien ship, where he meets Elaine and Jarod, who has been maimed by the aliens. An attempt to destroy the ship from the inside leads to its crash and crashes in the Laotian countryside, where they are rescued by local resistance fighters.