By the spring of 1918, Germany has one last chance to win the war before American troops arrive in force, and General Erich Ludendorff throws everything into a single offensive on the Western Front. This episode covers the opening assault, when storm troopers using new infiltration tactics break through British lines so fast that the Fifth Army is in full retreat within days and German shells are landing on Paris. Archival footage and maps trace the advance's astonishing speed and its equally sudden collapse, as supply lines stretch too thin to support the gains, reserves run out, and troops who have been fighting on short rations for years lose the will to keep advancing. The film treats the offensive as the war's hinge point: a gamble that came close enough to succeeding to terrify the Allies, and failed for reasons rooted less in enemy resistance than in Germany's own exhaustion. What follows is a German army that has shot its last bolt, with the initiative passing permanently to the other side.