One Christmas Eve, a carefree young man, Eric, arrives in a small provincial town. Here, he meets Julien, a bar pianist who is his exact double. Julien is in love with Marinette, a pretty waitress, but he is too shy to make any romantic overtures. Eric decides to give the course of true love a helping hand by pretending to be Julien. Meanwhile, Eric’s fabulously wealthy uncle has sent his minions out to bring him back home, so that he may celebrate Christmas in the bosom of his family.

Richard is a private detective. He makes a good money from marital infidelity: the deceived husband and wife generously paid him for proof of their infidelity "halves"...

A well-known business lawyer is shot dead in the courthouse. A commissioner of the Criminal Brigade is in charge of the investigation and is helped by a journalist.

Henri Rainier has everything a man could want. A glamorous wife, two beautiful daughters and a well-paid job with a large bank. Then, one day, his entire world collapses. In the wake of a high-profile financial scandal, he is summoned into his director's office and accused of negligence. Rainier has no choice but to resign, but he soon realises that he has been made a scapegoat. He begins his own investigation in an attempt to clear his name and discover who is responsible for the enormous hole in the bank's finances. It soon becomes apparent that he is up against a very powerful and dangerous opponent.

While Henri was a POW during the war, his wife passed away, and he returned to face the challenges of bringing up three children alone. Henri may get drunk and angry at times, but he also has a better side that will not stay buried.

In Paris, a gold smuggler is at war with other local gangsters who want piece of the action. Then the mob shows up and makes things worse. And an undercover US Treasury Department agent is trying to infiltrate the smuggling business.

On a beach in Nice, François meets the mysterious Peggy and falls in love with her. Following her to a villa, he meets Marc, a lawyer who has a strange relationship with the girl.