In a post apocalyptic world a group of teens struggle to survive the presence of a mass murdering shape shifting monster. In a post apocalyptic world a group of teens struggle to survive the presence of a mass murdering shape shifting monster. In a post apocalyptic world a group of teens struggle to survive the presence of a mass murdering shape shifting monster. In a post apocalyptic world a group of teens struggle to survive the presence of a mass murdering shape shifting monster.