Murcia countryside, Spain, at the end of the 19th century. Pencho, a peasant, and Xavier, son of a powerful landowner, get into a bloody fight after arguing over the distribution of irrigation water. When Xavier is injured, Pencho is forced to flee from justice.
The war will separate the members of the Valon family, two sons Alexandre and Antoine being prisoners, while the youngest Gilbert enters the secret army. Only their sister, Denise, will stay on the farm with her grandfather and grandmother. The Germans invade the free zone.
