家财万贯的对冲基金经理詹姆斯（威尔·法瑞尔 Will Ferrell 饰）因为诈欺被判刑，法官特别给了他30天的时间让他安排处理工作上的相关事宜，身家百万的他为了准备好自己即将面对的恐怖监禁生活，雇用了平常帮他洗车的男子（凯文·哈特 Kevin Hart 饰），在最后自由的30天内对他加强训练，以应付之后的监狱生活……
A geneticist wakes up from an accident with only fragments of his memory is forced to relearn who he is via his twin brother. But as he digs deeper, he discovers he might not be who he thought at all.