The teacher at school made a scientific experiment - he put two rats in different cages. One of the rats was given carrots containing vitamin of growth, and the other did not feed. Time passed, and the rat, to whom nothing was given, became thicker than the rat that was fed. It turned out that one student from pity fed another rat.
| Directing | Vasily Kafanov | Director |
| Writing | Vasily Kafanov | Screenplay |
| Crew | Oleg Grigoryev | Poem |
| Camera | Aleksandr Chekhovskiy | Director of Photography |
| Sound | Alexander Klevitsky | Music |
| Production | Tatyana Zozulya | Producer |
