Pierre Chambrac, a French industrialist, and Canadian Paul Laforêt, two former brothers in arms, meet again by chance in Paris five years after the end of World War II. Pierre is engaged to a beautiful foreign young lady by the name of Helen Bering. He introduces her to his friend, which seems to trouble him. To his amazement, Helen and Paul disappear without notice. Pierre, who was beginning to feel jealous, sees his suspicion confirmed. He decides to fly to Montreal where he thinks the couple has taken refuge. Once there, he learns that his dear Helen is actually a criminal and that Paul is a policeman whose duty was to arrest her.

A band of Marseilles, lazy and happy to live, are involved in trafficking; Titin, put in prison for a while, is finally released and can marry Miette.

The maid of a clandestine brothel in Marseille is found murdered. The inspector Sergil, in charge of the investigation will employ somewhat particular methods in order to unmask the assassin.

Peter is a talented young composer who has so far not been able to get his revue “Traumschöne Nacht” in a music theatre. Behind the scenes of the “Alhambra”, a Paris music hall, he meets Violetta, a young up-and-coming artist. For her sake, Mr. Maroni, the director of the “Alhambra”, who is in love with Violetta but is rejected by her, has organized a costume party at which the young entertainer appears as a little flower seller. When Peter shows up there too, he believes that Violette is actually selling flowers.

The whimsical Jean Latour wins a competition for a month's holiday on the Côte d'Azur. When he arrives at the "Villa Sans Souci", he discovers that the owner and generous donor, M. Mallez, is a doctor, that the property's guests are sick with nerves, and that Mallez has brought him in to entertain his neurasthenic residents.

Marcel, rich and alone for Christmas, invite Françoise to celebrate with him. Soon, the fairy tale turns into a bad dream.

Michel Lenoir, a successful interior designer, has reached the middle of his life without ever getting married. A bit blue over it he dreams one night of a beautiful young woman. When he wakes up he is persuaded that this is the girl meant for him. He can't help thinking about her, talking about her, drawing her figure, her face, her eyes on paper. He even gives her a name: Sylviane. Later on, as he is holidaying in Portugal, he notices a charming girl swimming in the pool he is in. No doubt about it : he has found Sylviane. He follows her, talks to her, woos her and they are soon married. However, back in Paris, Michel realizes that Betty, an articulate sports writer, is not the idealized woman his brain had conceived. Things go awry and the couple is about to separate when well-meaning friends intervene and open up Michel's eyes : he must base his love story on everyday reality not on idle dreaming.