Vera Bendina
Kolya (voice)
Acting
Evgeniya Mores
Petya (voice)
Acting
Valentina Sperantova
Sandy (voice)
Acting
Galina Novozhilova
Natasha (voice)
Acting
Mikhail Yanshin
Professor (voice)
Acting
Vladimir Gotovtsev
Watchman (voice)
Acting
Liliya Gritsenko
Navigator (voice)
Acting
Vladimir Gribkov
Warden (voice)
Acting