Lionel Meadows (Peter Sellers) is a London garage owner who makes extra cash dealing in stolen cars. Meadows buys log books from scrapped models, then has other cars corresponding to the log books stolen and the number plates replaced. He gives a list of the latest batch to young petty thief Tommy Towers (Adam Faith), which includes a 1959 Ford Anglia. The car Tommy steals belongs to struggling cosmetics salesman John Cummings (Richard Todd), who needs the car to keep his job. Also, he did not insure the car against theft and becomes desperate to recover it.