Keep on Dancing

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 "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 outside, including her fiancé.
Meanwhile, Tze Ngor is out looking for her ex-husband Ma Sai Mei who heartlessly deserted her. She meets the postman who has a secret infatuation with Cheung Sheung. She also makes an acquaintance with millionaire Tong. Can both sisters have a happy ending?
(Source: HKCM/Joy Sales)