Three gangsters on the run break into a rehabilitation center for delinquent teenagers run by the couple Roger and Irène. The residents are divided over how to deal with the three bad guys, who want to take over the home.

Lyon, 1953. Maria Manzana is the oldest of a family with five children and the only one who has a job. Maria's mother is deceased and her father is regularly drunk and violent. One evening when he wants to beat his daughter Christine, Mary helps her sister and accidentally she kills her father. At Maria's advice the family would prefer to flee. Anna, the girlfriend of Mary's brother Michael, accompanies them. Michael doesn't want to leave her behind. A friendly trucker brings Mary and her company to the south. The group then walks on deserted roads to a village, that was abandoned more than 25 years ago due to lack of water.

"Les quatre vérités" aka "The Four Truths" is a movie anthology that consists of four segments, all loosely parodying fables from the 17th-century French poet Jean de la Fontaine. The US cut usually features only 3 segments.