The film, set in 1912, is about the exploits of France's first motorized police brigade.

In the Kingdom of France from 1640 is the old with his body ailing Cardinal Richelieu, powerful man under Louis XIII, faced with the machinations of his tipped designated successor, the Marquis de Cinq-Mars.

Three former bank robbers are meeting after 25 years...

Patrick is a tenacious lawyer specializing in environmental law. France is a schoolteacher who becomes an activist after her husband develops cancer from exposure to a pesticide. Mathias is an ambitious lobbyist working for an international chemical corporation. The paths of these characters collide as the lives of thousands are affected by a tragic act that sparks a powerful movement while the corporation fights to prevent the truth from being revealed.

A man is murdered in Laguiole, Aveyron, Aubrac country. The young Elisabeth Richard, deputy prosecutor of Rodez, is handling the case. She has to deal with the hostility of a police officer, promoted on his own strength and not keen on the idea of being subjected to a young woman. Elisabeth especially has to unravel the tangles of ancestral antagonism and family secrets in order to unmask the culprit. The film is both a criminal investigation and a social painting.