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.

• Lucernafilm
• Václav Sova
• Otýlie Beníšková
• Lída Baarová
• Svatopluk Beneš
• Antonie Nedošinská
• Zorka Janů
• Josef Stadler
• Jaroslav Liška