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.

Twin brothers -- one rough and tough, the other a city-bred milquetoast -- compete for their father's fortune.

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!

Two Britons—inventor Hengist Pod, and Horse, a brave and cunning fighter—are captured and enslaved by invading Romans and taken to Rome. One of their first encounters in Rome leaves Hengist being mistaken for a fighter, and gets drafted into the Royal Guard to protect Julius Caesar.