Roy Chen Chih Lai is a serial rapist and murderer with a leg fetish, and cuts off his victims' legs as trophies after he's through with them. One day at a bank robbery shootout, he catches police woman Cheng Hsuen on camera, and chooses her to be his next victim. He begins to stalk her and enter her personal life, even waiting for her inside her home. He notices her sister, Kelly, as well (who is also a cop), and her boyfriend, Ken. After he kidnaps and rapes Kelly, Cheng decides to lure the madman by using herself as bait, and bring justice to the situation.

Heroine Black Rose disappeared from the world 30 years ago. Actually she was rejected by the man she loves, Lui Kei, and thus trapped him in a house. 30 years later, Black Rose meets a young man Ah Mo. The girl he loves Tic Tac is kidnapped by the evil Suen Mui Tong (Sour Plum Soup), so he asks Black Rose to help. Lui Kei while trying to talk Black Rose into saving Tic Tac finally falls in love with her. Suen Mui Tong discovers Black Rose is still alive, which brings up the history of hate between Black Rose and her mother...

After being haunted by evil spirits inside a residential building, a security guard seeks help from a mysterious exorcist, who turns out to be an escaped mental patient.