Pioneer Seryozha Shcherbachov is left without adult supervision and gets involved in a truly dangerous story full of adventures and new acquaintances.
| Actor | Role |
|---|---|
| OOleg MogutovNot listed | Not listed |
 Vladimir IlinNot listed | Not listed |
 Vladimir BolshovNot listed | Not listed |
 Maksim KerinNot listed | Not listed |
 Roza KhairullinaNot listed | Not listed |
 Leonid TimtsunikNot listed | Not listed |
| DDaniil PopovNot listed | Not listed |
 Aleksandr BarinovNot listed | Not listed |
| AAnna SuvorovaNot listed | Not listed |
 Makar KaryaginNot listed | Not listed |
| EEvgeny MalyginNot listed | Not listed |