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.
| Directing | František Čáp | Director |
| Directing | Václav Krška | Director |
| Writing | Václav Krška | Novel |
| Writing | František Čáp | Screenplay |
| Writing | Václav Krška | Screenplay |
| Editing | Antonín Zelenka | Editor |
| Camera | Karel Degl | Director of Photography |
| Directing | Rudolf Stahl | Assistant Director |
| Camera | Jaromír Holpuch | Assistant Camera |
| Art | Jan Zázvorka | Production Design |
| Sound | František Šindelář | Sound |
| Sound | Stanislav Vondraš | Sound |
| Production | Jan Sinnreich | Production Manager |
| Sound | Jiří Srnka | Original Music Composer |
| Writing | K. M. Walló | Lyricist |
