Millionaire Wang Wanwan (played by Stephen Chow) was stabbed to death with an ice pick. Due to the breakdown of his relationship with his wife Judy Tong (played by Anita Mui), Judy Tong is the biggest suspect. It happened that Zhou Xingxing (played by Stephen Chow) looked almost exactly the same as Wang Wanwan, so the police asked Zhou Xingxing to pretend to be Wan Wanwan for Judy Tang to take home...