On June 22, 1941, Germany tears up its non-aggression pact with the Soviet Union and sends three million men across the border in what becomes the largest land invasion in history. This episode of the Soviet Storm series traces the opening months of Operation Barbarossa, using archival footage and interviews with military historians to show how Army Groups North, Center, and South drove deep into Soviet territory within weeks. It covers the Wehrmacht's early encirclements around Minsk and Smolensk, the defense of the Brest Fortress, and the string of Soviet defeats that followed Stalin's refusal to believe an attack was coming despite repeated warnings. The film lays out the strategy on both sides, from German plans for a quick knockout blow to the Red Army's collapsing supply lines and command confusion in the first weeks of fighting. It builds toward the drive on Moscow, framing Barbarossa's early success and its eventual failure as the hinge on which the entire Eastern Front turned.