Prosper Bourrache, who has the gift of the gab, is natural born street vendor. Due to a mistake he gets involved in the burglary of a shady banker's house. In fact, the whole operation is a setup. But Prosper will finally get away with it, have the crooked financier arrested and pinch his girlfriend away from him.

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...

Anatole, quivering nostrils and greedy lips, is the resourceful clerk of Mrs. Paufilat, a butcher. It takes a fancy to take on the identity of the Paufilat son, Paul. He must then undergo the assaults of the tumultuous Germaine, exhilarated by the money of Paul Paufilat.

Jacques Hélian, an attractive charm singer, too stifled by the jealousy of the radio director's niece, flees with his orchestra, on the advice of his secretary Bob. They fail in a small village, where there is a boarding school for young girls. Bob responds to the love letters the teacher sends to the handsome singer.

Monsieur Octave, a good man who has retired from the French national railway company, wants to have his house built. To this end he contacts a loan company. They ask him to credit them with 100,000 francs. Which he does. From then on, Octave starts waiting, waiting, waiting...

Stuck in Angoulême between her uncle, who composes classical music, and her aunt, who is a fan of contemporary music, young Irène finds life boring. Fortunately, there is swing music which illuminates her days. So when, one day, Raymond Serre and his swing orchestra come to Angoulême, she seizes the opportunity to slip the copy of a song she has written into the pocket of one of the musicians. The trouble is that while she is doing so, the train she has boarded pulls out.