A young opera dancer tries to help her mother financially by performing in a dubious cabaret.

Robert Vernier is assigned by the Secret Service to unmask a band of gangsters determined to get their hands on the plans for a new plane. They manage to steal part of it and kidnap Robert's fiancée, named Monique. Robert will manage to dismantle the gang and will be surprised to find that at the head there is a policeman...

A man is too shy to ask a girl out and decides to kill himself. While lying in the road he is rescued by a Doctor who tries to cure him by implanting the heart of a rooster into him, something which suddenly makes him irresistible to women.