Fifty-year-old Vladimir Ivanovich Prokhorov, relieved of his worldly possessions, takes a journey back in time. Accompanied by a traveling companion barely half his age, he revisits the people and places of his youth and witnesses the dark forces that shaped the 20th century.

In January 1942, Adolf Hitler appoints Fedor von Bock to command Army Group South and supervise Operation Blau. The German forces advance in the south of Russia, scattering the Soviets and approaching Stalingrad, that seems on the verge of falling to the enemy's hands. The movie ends with Vasily Chuikov assuming command of the 62nd Army at September.