HUA opens a clinic after graduated from the Medical School. Her godfather LAU, a computer expert, did not come to the opening and HUA is upset. CHEUNG, a scientist researching in cloning in U.S.A. returned to HK after his project was rejected. CHEUNG meets LAU and becomes good friends as both of them are interested in the cloning of man. They start researching on the cloning project in a private villa. LAU's wife finds him acting strangely and suspects him.

CHEUNG meets HUA and joins her clinic working as her associate. HUA visits the orphanage and finds a newly arrived orphan WAI, who is behaving very strangely but quite similar to her character when she was young. HUA tries to be friendly to WAI and wants to change his nasty behaviour. CHEUNG eventually discovers that WAI is the clone of his son which he produced when his wife left him with his real son. He becomes very excited and tries to reach WAI.