Een groep kinderen probeert tijdens de zomer verschillende mysteries op te lossen.
| Directing | Vladimír Blažek | Director |
| Writing | Vladimír Blažek | Writer |
| Production | Šárka Podlipná | Unit Production Manager |
| Costume & Make-Up | Jiří Budín | Makeup Artist |
| Camera | Rudolf Milič | Director of Photography |
| Art | Tomáš Moravec | Production Design |
| Crew | Zdena Froncová | Script |
| Production | Jan Milič | Unit Production Manager |
| Art | Jindřich Goetz | Production Design |
| Editing | Ivana Davidová | Editor |
| Writing | Martin Bezouška | Writer |
| Art | Vladislav Kaska | Graphic Designer |
| Sound | Lumír Turek | Sound |
| Production | Karel Kvítek | Production Manager |
| Writing | Dušan Kukal | Writer |
| Directing | Viktor Riebauer | First Assistant Director |
| Crew | Mária Staroňová | Dramaturgy |
| Art | Vladislav Kaska | Title Designer |
| Production | Bohumil Huja | Unit Production Manager |
| Sound | Ladislav Štaidl | Original Music Composer |
