Georges Dumoulin

In Saint-Rupert, Basse Lozère, the son of a family of garbage collectors, Pissenlit, who has played the mentally deficient since childhood so as not to be forced to go to school, is in fact a prodigy in mathematics: by reading a book found in a trash can, he revolutionizes a mathematical theory. Meanwhile, his father is making a computer from objects recovered from garbage cans, and capable of composing musical "hits" that may make him a star.

In the spring of 1944, in the Woëvre forest of Lorraine, a group of young maquisards takes in four German deserters. led by Saint-Brice is based in the Woevre forest. Lise, a nineteen-year-old girl, is their liaison officer. One evening, four German soldiers turn up as deserters. After a period of doubt, the maquisards agree to integrate them into their group. Lise falls in love with one of the newcomers, Werner, and becomes his mistress. One day, she leaves on a mission with Lucien, and comes across an enemy patrol. The SS shoot Lucien and free Lise. In the camp, people begin to think that the maquis has been betrayed.