During the anti-fascist struggle, in 1944, a partisan detachment receives Soviet weapons and ammunition delivered by airplanes. Some of the weapons must be transferred to another partisan detachment. This task is entrusted to a peasant potter. Overcoming enormous difficulties and failing to meet the contact with the password, the peasant nevertheless delivers the weapons to their destination.

The Soviet army is approaching the Bulgarian border. Many government ministers and army officers prepare to flee the country. The partisans take over the key administrative buildings. At the War Ministry, the commander of the armored brigade Major Essev hesitates between his sense of honor as an officer and his patriotic duty. He takes the side of the partisans.