An honest Hong Kong cop protecting a Triad boss's girlfriend-turned-informer, finds himself framed for the murder of a dirty cop and going on the run. The movie mixes slapstick with wild stunts and features some painful outtakes during the final credits.

A dedicated Hong Kong cop's unusual policing methods result in his demotion to traffic duty, despite his success in fighting crime. Meanwhile, an old enemy is released from prison and sets out to get revenge.