The cruel and abusive headmaster of a boarding school, Michel Delassalle, is murdered by an unlikely duo -- his meek wife and the mistress he brazenly flaunts. The women become increasingly unhinged by a series of odd occurrences after Delassalle's corpse mysteriously disappears.
Four prison inmates have been hatching a plan to literally dig out of jail when another prisoner, Claude Gaspard, is moved into their cell. They take a risk and share their plan with the newcomer. Over the course of three days, the prisoners and friends break through the concrete floor using a bed post and begin to make their way through the sewer system -- yet their escape is anything but assured.
Businessman Victor Hardy wants to buy the entire area around the small village of Cabosse. He claims that he wants to return to nature, but he also intends to profit by selling the water from the village fountain, which is reputed to enhance longevity. However old farmer Mathieu and his sons don't want to sell...
