Professor Pierre Ginsbairge, an instructor at a success school, tells his class that nothing falls from the sky into their laps. On his way out, a safe falling from an upper-story window, nearly drives him into the sidewalk. Uninjured, but learning that the safe-owning company is insured, he claims to be injured and is sent to the hospital.There, he is mistaken for a look-alike famous surgeon and is in a jam when the surgeon arrives and finds Pierre making love to his wife, the nurse.

Sally Newton is in love with Lee Sullivan, a young tenor singer with Johnny Johnson's Orchestra, but her father prefers a stuffy young clerk as her suitor. She makes him taker her to the nightclub where Lee sings. Lee has arranged for Sally to elope with him, his song "Let's Take It on the Chin" being the signal for her. But the clerk has hired a tough gangster to keep Lee from singing.

Professor Pierre is assigned to find a missing heiress whose fortune will go to a worthless relative if she isn't found. He uses most of his dialect ability in the search by posing as a Chinaman, an Englishman, a sailor and a Scotchman, but is unable to find her. He meets his sweetheart at a restaurant and, there, discovers she is the heiress he has been searching for. She breaks off their romance when she finds out she is rich.

Nickotai (Danny Kaye) needs an eye test and is the first patient of ‘eyetestometist’ Henry Groper.