A poor girl was given an impossible task by her stepmother: to gather snowdrops in a winter forest. Suddenly she stumbled across twelve brothers who happened to be the twelve months.
| Writing | Nikolay Erdman | Writer |
| Directing | Mikhail Botov | Director |
| Directing | Ivan Ivanov-Vano | Director |
| Writing | Samuil Marshak | Writer |
| Writing | Samuil Marshak | Theatre Play |
| Visual Effects | Boris Butakov | Animation |
| Visual Effects | Vasiliy Ryabchikov | Animation |
| Directing | Lidiya Sazonova | Assistant Director |
| Art | Konstantin Karpov | Art Direction |
| Visual Effects | Tatyana Fyodorova | Animation |
| Art | Anatoliy Kuritsyn | Art Direction |
| Crew | Nikolay Voinov | Cinematography |
| Art | Elena Tannenberg | Art Department Assistant |
| Visual Effects | Faina Epifanova | Animation |
| Visual Effects | Lev Popov | Animation |
| Visual Effects | Boris Meerovich | Animation |
| Visual Effects | Fyodor Khitruk | Animation |
| Visual Effects | Elena Khludova | Animation |
| Crew | Elena Petrova | Cinematography |
| Crew | Olga Gemmerling | Scenic Artist |
| Visual Effects | Kostiantyn Chykin | Animation |
| Visual Effects | Vladimir Krumin | Animation |
| Sound | Mieczysław Weinberg | Music |
| Art | Vera Valeryanova | Art Department Assistant |
| Art | Aleksandr Belyakov | Art Direction |
| Directing | V. Sveshnikova | Assistant Director |
| Visual Effects | Nikolay Fyodorov | Animation |
| Production | Natan Bitman | Production Manager |
| Directing | Galina Andreeva | Assistant Director |
| Visual Effects | Vladimir Popov | Animation |
| Art | Tatyana Sazonova | Art Department Assistant |
| Sound | Nikolay Prilutskiy | Sound |
| Art | Anatoliy Sazonov | Art Department Assistant |
