Nikolai Kalinin

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

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.

Former Wachmister Alexander Solovey receives a task from the Bobruisk Revolutionary Committee to organize the defense of Soviet power in the village of Rudobelka (Polesie) from the onslaught of Germans, Poles and White Guards...