杰克·布查德，害羞的17岁男孩，约了美少女安吉。安吉被绑架后，爷爷露出了真相。在最后一搏抢救安吉的努力中，爷爷扮演了"魔鬼终结者"，他的老特种部队搭档和杰克一起，执行最后一次任务。
Jake Bouchard, a shy 17-year-old, has finally scored a date with the incredibly wonderful Angie. When Angie gets kidnapped, the truth about Grandpa comes out. In a last ditch effort to rescue Angie, Grandpa re-enlists "The Devil"s Scum", his old special ops unit who band together with Jake to go on one last mission.