The boy Mitya is a real athlete: He is actively involved in sports and participates in all school sports competitions. One day he finds an apple that has fallen from a tree and eats it. Mitya had a severe stomach ache, and the boy imagined himself very tiny in his own body, where he met the evil Microbus.
| Actor | Role |
|---|---|
| LLidiya KataevaNot listed | Not listed |
 Efim KatsirovNot listed | Not listed |
 Garri BardinNot listed | Not listed |
 Vatslav SkraubeNot listed | Not listed |