Shenzhen prostitute Yip Siu Ngan after killing someone comes to Hong Kong with her victim's identity. Chan is a very lonely city dweller. Separated from his wife, he in order to avoid trouble handed his 4 year old daughter to her mother's care. Siu Ngan after researches Chan's information in detail, runs him over with a car one night and breaking his legs, then holds him hostage in the house. She even kills Chan's mother......