The Lagoon of Desire.

Miranda, the rich and spoiled daughter of an Athenian businessman, accompanies her father to Messolonghi, where they have their own fish farming facilities in the best parts of the lagoon. There, while the local fishermen try to establish a cooperative so they can defend themselves against exploitation by their bosses, Miranda seduces a charming and dynamic young man, disrupting his life and his relationship with the girl he loved and intended to marry.