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Spring 1941. The peaceful life of three friends, two Sergeys and Ekaterina, from a small village in Kuban is interrupted by a sudden declaration of war and the landing of fascists in the Caucasus. The guys in love with Ekaterina volunteer to join the partisans, and she stays in the village and asks them to return quickly. Not far from these places, the Germans organize a warehouse with ammunition. The commander of the partisan detachment receives an order to destroy the enemy and blow up the warehouse. Two Sergeys are sent on a dangerous mission.