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.
In a run-down South American town, four men are paid to drive trucks loaded with nitroglycerin into the jungle through to the oil field. Friendships are tested and rivalries develop as they embark upon the perilous journey.
A doctor at a run-down psychiatric hospital is offered a large sum of money to shelter a new patient. Soon the place is full of suspicious and secretive characters, all apparently international secret agents trying to find out who and what the patient is.
