A group of children is trying to solve a mystery related to the diamonds smuggling.
| Directing | Jiří Hanibal | Director |
| Writing | Drahoslav Makovička | Creative Producer |
| Writing | Venuše A. Sekyrová | Story |
| Writing | Venuše A. Sekyrová | Screenplay |
| Writing | Jiří Hanibal | Screenplay |
| Directing | Robert Vacík | Assistant Director |
| Directing | Magda Vodičková | Assistant Director |
| Directing | Milan Vácha | First Assistant Director |
| Crew | Karel Cop | Dramaturgy |
| Camera | Antonín Holub | Director of Photography |
| Camera | Michal Krob | Camera Operator |
| Camera | Emil Hora | Assistant Camera |
| Art | Jaroslav Krška | Production Design |
| Art | František Vokřál | Assistant Production Design |
| Art | Milan Bábik | Set Decoration |
| Art | Karel Krejčí | Set Decoration |
| Art | Eva Slívová | Set Decoration |
| Costume & Make-Up | Marta Kaplerová | Costume Design |
| Costume & Make-Up | Eva Lackingerová | Costumer |
| Costume & Make-Up | Eva Vacková | Costumer |
| Costume & Make-Up | František Čížek | Makeup & Hair |
| Costume & Make-Up | Vlasta Hájková | Makeup & Hair |
| Costume & Make-Up | Miroslav Buhr | Makeup & Hair |
| Editing | Zdeněk Stehlík | Editor |
| Editing | Ruth Kubalíková | Assistant Editor |
| Editing | Erika Vojáčková | Assistant Editor |
| Sound | Jiří Lenoch | Sound |
| Production | Karel Škop | Production Manager |
| Production | Jiří Holeček | Unit Production Manager |
| Production | Juraj Zach | Unit Production Manager |
| Production | Adriena Váchová | Assistant Production Manager |
| Camera | Lenka Rambousková | Clapper Loader |
| Camera | Jaroslav Trousil | Still Photographer |
| Sound | Jan Hrábek | Original Music Composer |
| Sound | Jan Hrábek | Conductor |
| Sound | Štěpán Koníček | Conductor |
| Writing | Jaroslav Machek | Lyricist |
| Sound | Zdeněk Mann | Vocals |