Jerry Lewis musical comedy. Clayton Poole (Lewis) is a small town TV repairman who is still in love with his former hometown sweetheart, Carla Naples (Marilyn Maxwell), now a Hollywood starlet. When Carla becomes pregnant following a hasty marriage in Mexico, which she has completely forgotten about, the studio tells her a baby will ruin her career - so she turns to Clayton, the only person she can trust, and he agrees to care for the baby when it is born. But what with multiple births and media mix-ups Clayton gets a lot more than he had bargained for, and ends up having to go into hiding to escape from the mess he has created.