The story is that of two clever crooks who are operating at a fashionable seaside resort, with the help of a highly trained and uncannily intelligent chimpanzee. Valuable jewels are constantly disappearing and the detectives are unable to obtain a clue. Finally, after an especially daring robbery, a clue is found that leads to the discovery of the thieves. The simian leads the detectives a chase that calls for some acrobatic stunts on the part of the chasers. The end of this is the capture of the chimpanzee, recovery of the jewels and the arrest of the crooks.