影片主角为一个不务正业的差人，他狡计破损他妹妹和一个神经病医生的婚约，想尽法子让妹妹的未婚夫出丑。

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.