Juan se ha casado por poderes con Ana, una argentina a la que no conoce. Mientras la espera en el aeropuerto, un amigo lo anima a beber.

After serving their sentence, three prisoners, a doctor, a civil servant and a thief, leave jail. During the train trip they do together to return home, they analyze their respective lives. The doctor has been required to perform an operation on a child abandoned by his father, a millionaire.

This romantic story turns on a stirring infatuation that takes hold of three young people under the influence of Simon, a Prague student. After the study year, 18 year-old Julio returns to his parental home, a little chateau on the Otava river. There he converges with his childhood friend Petr and the young boatman's daughter Klárka. Sharing her beguilement with Simon, who has quickly turned a tranquil summer atmosphere into a relationship drama, is Julio's cousin Rosa.