At the racetrack, cleaner, Willy Joy is tricked into buying Lindy Lou, a useless greyhound, who's not too healthy either. While getting the dog back in shape, Willy crosses paths with a gang of crooks who's specialty is fixing the races with doped dogs.

• The Rank Organisation
• Frankie Howerd
• Stanley Holloway
• Alfie Bass
• Lionel Jeffries
• Susan Beaumont
• A.E. Matthews
• Tony Wright
• Joan Hickson