史考特是一名极端讲究规矩和注意整洁的警探。福星则是世界上最肮脏、最凶恶的一条师狗,它的主人不幸因自赌一宗犯罪事件而被误杀,福星成为凶杀案的目击证人。史考特负责调查这个案子,虽然他十分痛恨福星,却不得不为了保护这个目击证人而跟它生活在一起,翻天覆地的笑料,也由此源源不绝产生...Scott Turner has 3 days left in the local police department before he moves to a bigger city to get some "real" cases, not just misdemeanors. Then Amos Reed is murdered, and Scott Turner sets himself on the case. The closest thing to a witness in the case is Amos Reed's dog, Hooch, which Scott Turner has to take care of if it's going to avoid being "put to sleep".