Two clans are opposed: the Richer, an influential family at the head of the Richer Companies, led by Philippe, a man respected by all, and the Martineau, frowned upon agricultural producers, led by the rude Michel. While a major transaction must transfer the company to the Martineaus, an unforeseen event turns everything upside down. The two families, and their heirs, find themselves drawn into a brutal conflict with unsuspected consequences.