One evening, a strange-looking man who resembles a homeless person walks into an ordinary diner. He claims to have come from the future and tries to rally the patrons to fight against an uncontrollable artificial intelligence that, according to him, will soon enslave humanity. But since those present don’t believe him, thinking he’s crazy, the stranger—threatening to blow himself up along with everyone else—assembles a squad of “volunteers” and sets out with them to carry out his mission.