Various distinguished members of Hong Kong high society were being blackmailed by mysterious and attractive lady Chang Siu Juen, who seems to know the secrets of their past and present illegal activities. Millionaire Cheng Yung Seng knew that it would be his turn next. He thus planned to eliminate Chang first but the plan did not work out and Chang was saved by private detective Fang Dai Kuen...
as Fang Dai-Kuen
as Cheng Yung-Seng
as Cheng's thug
as Insp. Lo
as Chang Siu-Juan / Chen Wan-Lan
as Private eye Huang Sin Wei
as Cheng's thug
as Huang's employee
as Cheng's thug
as Cheng's thug
as Extortion victim
as Tin Hsiang
