Yevgeniya Volkova

Set in the early 1920s after the end of the Russian Civil War, Red Army soldier Nikita returns to his hometown to see his partner Lyuba, both of whom are scarred by the trauma of the Russian Empire of yesteryear.

Follows the life of the Russian mathematician Sofya Kovalevskaya.

A Red Army officer Polevoy possesses a navy dirk with a secret message encrypted in its handle. The second part of a message belongs to a White army officer Nikitskiy. It's up to three young friends of Polevoy to uncover the mystery.

Three friends in a summer camp are looking for a treasure hidden in a old mansion.