Ophile, Clothilde and Bettine are sisters who live together in a large house by the sea. One night their neighbor, the Lighthouse Keeper, is killed by lightning during a terrible storm. His son, Paris, returns to take his father’s place at the lighthouse. Ophile and Bettine fall in love with Paris, and he returns Bettine’s affections. Terrible rivalries ensue. A peculiar baby is born. Havoc and revenge result. Eventually some people die and others are reconciled.