When German forces raced toward Moscow in 1941, Stalin's government faced a choice: lose the factories that fed the Red Army or move them. This film tells the story of the Soviet Union's industrial evacuation, an operation that shifted entire factories, their machinery, and their workers roughly a thousand miles east on an estimated one and a half million railway wagons. Whole plants were dismantled bolt by bolt in cities like Kharkov and reassembled in the Urals and Siberia, often resuming production within weeks, sometimes under open sky before walls were even finished. The film traces how this scramble kept tanks, artillery, and aircraft flowing to the front even as the western Soviet Union fell under occupation, and how the effort depended on forced labor, brutal deadlines, and a workforce that included women and children filling in for men sent to fight. Archival footage and expert testimony lay out the logistics behind a wartime achievement that rivaled the fighting itself in deciding the war's outcome.