A trespassing gang of boys encounter a ghost in the ruins of a castle. When they rescue the ghost who is caught in a trapset, they become allies in a fight to prevent ruins from being turned into mushroom farm by the city authorities.
| Directing | Oldřich Lipský | Director |
| Writing | Zdeněk Svěrák | Screenplay |
| Writing | Oldřich Lipský | Screenplay |
| Writing | Jiří Melíšek | Screenplay |
| Crew | Vladimír Novotný | Special Effects |
| Costume & Make-Up | Theodor Pištěk | Costume Design |
| Writing | Ota Hofman | Creative Producer |
| Directing | Milada Mikešová | First Assistant Director |
| Directing | Martin Mahdal | Assistant Director |
| Crew | Marie Hejzlarová | Script |
| Writing | Jiří Melíšek | Story |
| Crew | Jana Knitlová | Dramaturgy |
| Camera | Jan Němeček | Director of Photography |
| Camera | Zdeněk Prchlík | Camera Operator |
| Camera | Antonín Šimral | Assistant Camera |
| Camera | Jan Hanzal | Assistant Camera |
| Art | Vladimír Labský | Production Design |
| Art | Petr Bárta | Assistant Production Design |
| Art | Josef Müller | Set Decoration |
| Art | Václav Pošta | Set Decoration |
| Art | Jan Petrů | Set Decoration |
| Costume & Make-Up | Ludmila Ondráčková | Costumer |
| Costume & Make-Up | František Čížek | Makeup & Hair |
| Costume & Make-Up | Jaroslav Hruška | Makeup & Hair |
| Costume & Make-Up | Vlasta Ulbertová | Makeup & Hair |
| Editing | Miroslav Hájek | Editor |
| Editing | Magda Hájková | Assistant Editor |
| Editing | Helena Lehovcová | Assistant Editor |
| Sound | Jiří Lenoch | Sound |
| Production | Jaromír Lukáš | Production Manager |
| Production | Milana Melcerová | Unit Production Manager |
| Production | Miroslav Dousek | Unit Production Manager |
| Production | Jiří Synek | Assistant Production Manager |
| Camera | Dagmar Pitráková | Clapper Loader |
| Lighting | Václav Kovařík | Gaffer |
| Camera | Jan Kuděla | Still Photographer |
| Sound | Jaroslav Uhlíř | Original Music Composer |
| Sound | Štěpán Koníček | Conductor |
| Sound | Josef Vobruba | Conductor |
| Crew | Jiřina Kottová | Choreographer |
| Writing | Zdeněk Svěrák | Lyricist |
