A temperamental Broadway producer trains an untutored actress, but when she becomes a star, she proves a match for him.
An insane surgeon's obsession with an actress leads him to replace her wounded pianist husband's hands with the hands of a knife murderer--hands which still have the urge to throw knives.
A young man follows a pretty girl into her office, which turns out to be a musical dentist office. Cute chorus girls attend to the many male customers, and the girl the young man was following is revealed to be the dentist. She gives the young man anesthetic gas and he dreams the dentist and her troupe of nurses are dancing on the ceiling.
