Fairy tale based on J. Š. Kubín tells the story of the forest fairy Milena, who is punished by the Queen of the Fairies for loving King Silventus and giving birth to her son Václav. Milena becomes a green light, and little Václav is first taken in by his foster parents, then into the king's service, unaware that the king himself is his father.
Unfortunately the movie Klíček ke štěstí is not yet available on Disney Plus.
| Directing | Miloš Bobek | Director |
| Writing | Josef Štefan Kubín | Book |
| Sound | Otmar Mácha | Original Music Composer |
| Editing | Jana Malásková | Editor |
| Sound | Václav Nosek | Sound |
| Costume & Make-Up | Šárka Váchová | Costume Design |
| Writing | Jarmila Turnovská | Creative Producer |
| Production | Ivana Průchová | Executive Producer |
| Writing | Anna Jurásková | Writer |
| Crew | Šárka Baborovská | Dramaturgy |
| Sound | Pavel Hrubeš | Music Director |
| Art | Jiří Veselý | Set Designer |
| Costume & Make-Up | Petr Hovorka | Makeup & Hair |
| Costume & Make-Up | Helena Petřinová | Makeup & Hair |
| Editing | Jiří Fišer | Editor |
| Editing | Roman Vašíček | Editor |
| Camera | Emil Bleha | Camera Operator |
| Camera | František Okrouhlík | Camera Operator |
| Camera | Josef Veselý | Camera Operator |
| Directing | Jana Rezková | Script Supervisor |
| Directing | Hana Knoblochová | Second Assistant Director |
| Directing | Drahomíra Dítětová | First Assistant Director |
| Production | Eva Hladíková | Production Manager |
| Camera | František Procházka | Director of Photography |
