A first episode in the trilogy about the Russian partisan's resistance against the Nazi occupation of Russia during WWII. The film is set in August of 1941, when the Nazi forces invaded and occupied the European part of Russia. Major Mlynsky is in charge of the special group of partisans. His group is absorbing other small groups of Russian soldiers, who managed to survive from the attacks of the overwhelming Nazi forces. The Nazi Armies are advancing to Moscow. Major Mlynsky is organizing the Russian partisan's resistance against the Nazis, behind the enemy lines.