The film tells the story that Chen Xing (Yam Tat-wah) is an underworld boss arrested by the police. In order to escape the trial, he pretended to be crazy and was sent to a mental hospital for treatment. There, his men Ahe (Roy Cheung), A Liang (Wei Junjie) and Ake came to the rescue, and Chen Xing escaped smoothly.

Yam Tat-wah, born in Hongkong, China on March 1955, is a film and television actor. Yam Tat-wah entered the entertainment circle as a model. After graduating from the wireless TV artist training class, he signed a contract with 1979 Binbin Film Company as a basic actor, and 1987 began to take over film and television dramas. Yam Tat-wah won the Best Actor Award in the 9th Hong Kong Film Golden Bauhinia Awards in 2004, the Best Actor Award in the1kloc-0/Hong Kong Film Golden Bauhinia Awards in 2006 and the Best Actor Award in the 29th Hong Kong Film Awards in 2006 for "The Thief of the Year".