A generous doctor is aghast that the population of a small island is being oppressed and mistreated, but is seemingly unable to do anything about it, until the arrival of a young woman and the death of one of his friends prompts him into action.
After a novice nun learns of the sudden death of her parents, she leaves the convent to manage the family business and look after her teenage sister. Both of them fall prey to a womanizing mechanic with psychopathic tendencies.
Pushed by her husband to settle in the family castle, Agnès finds her sister-in-law Alix there. Her husband Carlos, often absent, loses interest in his wife and gradually approaches Agnès who will end up giving up this relationship.
