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.
Willie Joy
Captain Jack Montague
Blagg
Bert Benton
Susan Storer
Lord Reginald Cranfield
Vincent
Lady Emily Cranfield