A gang of hapless crooks, led by Sidney James, successfully perpetrate a robbery only to be caught after the fact. Fifteen years later they emerge from prison intent on retrieving their stolen loot - and discover a police station has been built over its hiding place.

The sinister Dr. Watt has an evil scheme going—he's kidnapping beautiful young women and turning them into mannequins to sell to local stores. Fortunately for him, Detective Sergeant Bung is on the case, and he doesn't have a clue!