The film is a cautionary tale about the need to develop good work habits, personal responsibility and conscience in life.
Unfortunately the movie The Key is not yet available on HBO Max.
| Visual Effects | Fyodor Khitruk | Animation |
| Directing | Lev Atamanov | Director |
| Art | Boris Korneyev | Assistant Art Director |
| Art | Alexander Vinokurov | Art Direction |
| Editing | Lidiya Kyaksht | Editor |
| Sound | Emin Khachaturyan | Conductor |
| Visual Effects | Raisa Frichinskaya | Animation |
| Visual Effects | Marina Voskanyants | Animation |
| Visual Effects | Tatyana Taranovich | Animation |
| Visual Effects | Viktor Shevkov | Animation |
| Visual Effects | Lidiya Reztsova | Animation |
| Visual Effects | Lev Popov | Animation |
| Visual Effects | Igor Podgorskiy | Animation |
| Visual Effects | Anatoliy Petrov | Animation |
| Visual Effects | Mariya Motruk | Animation |
| Visual Effects | Renata Mirenkova | Animation |
| Visual Effects | Kirill Malyantovich | Animation |
| Visual Effects | Elizaveta Komova | Animation |
| Visual Effects | Galina Karavayeva | Animation |
| Visual Effects | Valentin Karavaev | Animation |
| Visual Effects | Aleksandr Davydov | Animation |
| Visual Effects | Konstantin Chikin | Animation |
| Visual Effects | Igor Berezin | Animation |
| Visual Effects | Galina Barinova | Animation |
| Sound | Nikolay Prilutskiy | Sound |
| Writing | Mikhail Volpin | Writer |
| Sound | Lev Solin | Original Music Composer |
| Art | Leonid Shvartsman | Art Direction |
| Camera | Mikhail Druyan | Director of Photography |
| Writing | Raisa Frichinskaya | Script Editor |
| Directing | V. Shilina | Assistant Director |
| Directing | E. Turanova | Assistant Director |
| Camera | N. Nayashkova | Assistant Camera |
| Art | Dmitriy Anpilov | Background Designer |
| Art | Pyotr Korobaev | Background Designer |
| Production | Fyodor Ivanov | Producer |
| Visual Effects | Galina Zolotovskaya | Animation |
| Visual Effects | Elena Khludova | Animation |
