Duke Philippe marries Cristina, the daughter of a fisherman. But his brothers, seeing that they would be cut from the family inheritance set to go to Cristina, decide to get rid of her by imprisoning her in a tower and making the duke believe she died.
Pollution caused by an incinerator drives people mad and turns them into maniac killers. But, instead of the victims' bodies, the three wise monkeys are found (one cannot hear, one cannot see, one cannot speak).