Back from a stay in the Far East, a woman who knew the names of the chiefs of a drug ring is murdered. Georges Masse, the famous reporter, decides to investigate, accompanied by his faithful photographer P'tit Louis. He will come across some unappetizing characters like M. Dubois, a killer, Luigi Costelli, a dangerous trafficker and a beautiful but dubious lady, Suzanne Wilson. After being himself suspected, Masse will make the truth triumph.

Adolphe is in serious financial difficulties and the extravagances of his wife do not help to fix things.

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.

Two scriptwriters argue about the fate of Henrietta, a charming and gamine shopgirl. One favors a comical path for their heroine, who is overcome with sentimental love for a young photographer on Bastille Day. The other has a more thrilling and dastardly fate in mind for her. Among the film's irresistible conceits is Hildegarde Neff as an oversexed circus bareback rider.