In realising their scheme to rule the underworld, the Poisonous Snake Gang breeds the 'Blue Poisonous Bees' and sends Red Rose to the Flying Dragon Gang to execute the 'Flying Sting' mission. Chased by Lung King-tin, both of them are captured by Anna Tai of the Female Monster Gang. The three gangs fight for the possession of a nuclear pistol and allegiances shift as the agents fall in love.