Success doesn't exactly stare the unfortunate street cleaner Red Jones (Red Skelton) in the eye, and when he decides to propose to his sweetheart Ann Elliot (Janet Blair), who is a secretary at the Fuller Brush company, she demands that he makes something more of himself before she can accept the offer. She suggests he should follow the example of a salesman and friend of hers, Keenan Wallick (Don McGuire (actor)), who works at her company. Red gets a chance to prove himself worthy sooner than he had expected when he is fired from his job as a cleaner by his boss, Gordon Trist (Nicholas Joy), because he accidentally sets a trash can on fire in the line of duty, and smashes Trist's car window. Ann gets him a chance to show his skills as a door-to-door salesman for the Fuller Brush company, and he is teamed up with her friend Keenan. Both Ann and Red are unaware that Keenan himself had a romantic interest in Ann, and wants to get Red out of the way as soon as possible, so he can pursue Ann without competition. Keenan assigns Red a list of the hardest homes, and Red fails tremendously with his task of selling to an almost impossible potential customer. He has a comical run-in with a troublesome small boy, and a beautiful model at another home tries to seduce him.