Stanley is a bellboy at the Fountainbleau Hotel in Miami Beach, where he performs his duties quietly and without a word to anyone. All he displays are facial expressions and a comedic slapstick style. And anything that can go wrong, does go wrong when Stanley is involved. One day, Jerry Lewis arrives at the hotel and some of the staff notice the striking resemblance.

A member of a band practicing for an upcoming commercial finds out from his girlfriend that she got a job as nurse to a rich but eccentric old man, Mr. Lark. Believing that music can cure those with mental problems, he and his band accompanies the nurse to Lark's mansion in order to "cure" him.

Patty Nelson lands a job as a singer with orchestra leader Al Tyler, and tours with the band as "Patty Hart." Patty's father Russ is dismissed from his radio-station job, and the disc jockey selected to replace him is Al Tyler. Patty rushes home to keep Russ company on the air for the final few days, and Al wonders why she suddenly walked out on him. The new "Patty and Russ" radio show catches on, causing complications with Al and the radio-station bosses.