While camping in Jasper Park up North California, the couple Tom Alan Smithee and Gwen Marie Holden are attacked by a group of strangers; Tom is immediately killed and Gwen is abducted by the men to an underground facility to breed. A couple of months later, in Los Angeles, the manager of a video game company invites employees to participate in a 'Battle Royal' paint-ball game at a corporate retreat in the Jasper Park to practice executive tactics.