For the third year, the expedition has been searching for the causative agent of an infectious disease rampant in the Ussuri taiga, where a major construction project is about to begin. Meanwhile, the enemy seeks to destroy the fruits of years of labor of Soviet microbiologists. Young scientist Vasily Zheludev exposes a master saboteur and forces him to flee into the taiga.

Genres

Cast

Vladimir Druzhnikov

Anatoliy Kuznetsov

Mikhail Troyanovsky

Ivan Voronov

Nikifor Kolofidin

Roza Makagonova

Liliya Yudina

Nikolai Bogolyubov

Vladimir Yemelyanov

Margarita Nazarova

Aleksei Alekseyev

militia captain, arrested Mayboroda

Vladimir Vsevolodov

Nikita Pomazov, biologist