Cynthia Khan plays Officer Ching who accidentally disrupts a gun smuggling operation. Head of the deadly Five Fingers gang in turn frames Ching for killing a group of teenagers. As a result, her superior, Officer Kwong (Tommy Wong), suspends her for the time of the investigation. Ching with the help of a goofy private detective Charlie Chan (Anthony Wong) start the hunt for the gang and the very first lead they find is connected with Ching’s father (Bowie Wu) who has recently married mysterious Siu Hung (Kara Hui).