A boy is by an accident a member of a crew that is going to travel to the moon.
Vera Bendina
as Kolya (voice)
Vladimir Gotovtsev
as Watchman (voice)
Владимир Грибков
as Warden (voice)
Liliya Gritsenko
as Navigator (voice)
Евгения Морес
as Petya (voice)
Galina Novozhilova
as Natasha (voice)
Валентина Сперантова
as Sandy (voice)
Михаил Яншин
as Professor (voice)