Provence, 1847. The son of a wealthy landowner in the south of France, Jean-Baptiste, loses his mother in a tragic accident. His truculent father, who was always envious of his son and his relationship with his mother, takes a harlot he met a few months earlier as his new bride. Soon after, Jean-Baptiste is falsely accused by his "stepmother" of trying to take advantage of her. In disgust, his father banishes him forever from the family home. Jean-Baptiste's only solution is to live with Blanche, his mother's sister, in the mountains.

John Dubury, a fifty-year-old man disappointed by his life, sees his wife die from a fatal fall while they are on vacation together. And while an accident is initially thought to be the cause of death, suspicions soon turn to John... especially since a witness claims to have seen him push his wife.