This fast-paced mystery is in part based on a novel by Yves Ellena and is at least equally based on the 1943 classic Le Corbeau, which in 1951 was produced in English by Otto Preminger as The Thirteenth Letter. In this movie, someone is using a pirate radio broadcast to dish the dirt on the lives of the elite of a small French town.

This fast-paced mystery is in part based on a novel by Yves Ellena and is at least equally based on the 1943 classic Le Corbeau, which in 1951 was produced in English by Otto Preminger as The Thirteenth Letter. In this movie, someone is using a pirate radio broadcast to dish the dirt on the lives of the elite of a small French town.

July 1936. Leon Blum's (Daniel Mesguich) left-wing coalition government is facing one of the hardest strikes paralyzing the whole country's economy. But one man alone is about to get the French people back to work, and peacefully: Roger Salengro (Bernard-Pierre Donnadieu).

Because they could no longer stand the xenophobic comments and behavior of their neighbors, Véronique and Sylvain Marchand, parents of a little girl and members of the Stop Racism organization, went into exile in a quiet suburban town, where they bought a house, the villa "Mon rêve". Soon after, the Dialo family, friendly Africans, moved into the adjoining house. At first, the two families get along perfectly. The only problem was that the Dialos organized many parties, which often ended late at night. The patience and understanding of the Marchands only delay the inevitable conflict.

Olivier Rohan, a young doctor, has just opened a general practice. However, having only a small clientele, he continues to work in the hospital's emergency room. One night, he will witness the unnatural death of a young man.

Claire Rousset visits her ex-husband Pierre who lives in the Lyon region. For some time now, Pierre's health and that of the other inhabitants of the village has deteriorated to the point of becoming worrying.

Lucien is a young soldier in the French army during the First World War. Recently married and with a young daughter, his only aim is to get through the war unscathed and get back to his wife and daughter. But this world is turned upside down by a pair of trousers.