老实守规矩的会计Henry Perkins,一次偶然的机会, 他把自己的公文包和另一个人的搞错了, 发现错拿的公文包里有100万美金. 他将这笔财富告诉了亲密无间的老婆, 但是他老婆的反映也是和他一样的冷静, 随着剧情的发展, 加入的人越来越多, 有他们的警察朋友, 当然还有那恐怖的"大块头", 他急于想找回自己的钱.Henry Perkins, a mild-mannered accountant, accidentally trades briefcases with another man, to find out that there's five million dollars inside. Henry tells his unsuspecting wife of their new-found fortune, but she doesn't embrace it as well as he does. Soon they're joined by their best friends, a cop on the take, a cop on the hunt, and the dreaded Mr. Big, who has come to claim his million dollars.