A young man wants to be a Hong Kong police officer but is too short to qualify. However, he doesn't let that stop him: he goes around impersonating an officer, investigating crimes and busting criminals. One day, he interrupts a bank robbery (by three men in drag), gets shot in the process and dies. When the case is assigned to a female investigator, he returns as a ghost to lend a hand at solving the robbery.

An aging crime boss discovers his rebellious daughter is dating a punk. His former gang members try to bring her back using tricks and force, only to find out the punk is tied to the drug business in America, and is not to be messed with.