Cheung Sheung and Tze Ngor are twin sisters. Tze Ngor is a lunatic and stays in a mental hospital. But out of a madcap incident, Cheung Sheung is "cheated" into the hospital, exchanging identity with her insane sister. The mad house is lived by all kinds of weirdos. The "game" is that Cheung Sheung will stay in the hospital only for a while. But strangely enough, she gradually becomes more and more ease with the way of life in the hospital until one day, she's forgotten what life is like...
曾志偉
as Meng Chia Li
吳耀漢
as Dr. Alan Lam
馮淬帆
as Ma's Solicitor
Charlie Chin Chiang-Lin
as Dr. Chin
李麗珍
as Yun Yun
繆騫人
as Chieh Chang Chang / Chieh Chi Ao
孟海
as Postman
太保
as Gangster
Billy Ching Sau-Yat
as Gangster
黃霑
as Ma Shih Mei
林建明
as Forgetful Nurse Ling
盧海鵬
as Traffic Policeman
