YIP KWOK-CHEONG runs a private investigation agency. Members of his investigation team include KAY ON-KUI, CHOW KA-SING, LAW LAI-NA, NIP BING, and CHIU YING-TAT. The team investigates the adulterous relationship between Jeweler MA CHING-HANG and a model called SHIRLEY. KUI follows closely on SHIRELY, pretending to be the driver of a model agency. Model CHUNG YEE-TAK drink drives after quarrelling with her boyfriend. She finds it fortunate that she is not injured at all. She feels dejected at work the next day, because nobody pays any attention to her. She overhears by chance where SHIRLEY is seeing HANG. KUI nearly has an accident as he is tailing SHIRLEY. TAK tips him off about where SHIRLEY is meeting HANG. SING manages to take their photos. When KUI thanks TAK for her information, she asks him to look for her mother, LEUNG WAI-KUEN, who left home many years ago. KUI visits TAK’s grandmother, CHAN SIU-YUK, who lives in a village.… ...