Brother and sister Danya and Valya move with their mother to a northern seaside town and immediately become participants in an exciting but dangerous adventure.
Nikolai Volkov St.
Foma Konovalov
Inna Zhuravel
Glafira
Aleksey Zaytsev
Pasha Zhgutov
Tanya Demushkina
Valya
Yura Bondarenko
Danya
Yura Leshov
Grandson Foma Konovalov