Bonsoir Paris, bonjour l'amour

Clari is a young jazz aficionado. Annick, his pretty sister, is just starting out as a dancer. Both are making extra money as small-time con artists. One day, they befriend one of their victims, Paul, an Austrian pianist. As Paul embraces the sibling's bohemian life, he falls in love with Annick. However, Paul runs out of money and has to return to his homeland. Annick becomes a taxi-girl in a nightclub to help him out, but the move is not to Paul's taste. Clari, ever the guardian angel, sorts everything out.