After making his fortune in the city, a quiet young man returns to his isolated village in the Danube delta. It is a labyrinth of waterways, small islands and over-grown vegetation, where the villagers are cut off from the outside world. He is greeted by a stepfather he has never met before, as well as his mother and sister (Orsi Toth). A seemingly happy occasion, the man's return fractures the family. He decides to build a house out in the marshes, and his sister follows him - at first to help out, and later to live with him. As their relationship becomes increasingly close and intimate, they elicit the disapproval of their family and eventually of the community too leading to tragic consequences.