September 1944: the Allies launch the largest airborne assault of the Second World War, dropping paratroopers across the Netherlands in a bid to seize a chain of bridges and end the war by Christmas. This film reconstructs the opening hours of Operation Market Garden, from the mass glider and parachute landings near Arnhem and Nijmegen to the grinding, delayed advance of XXX Corps along the single road meant to link up with them. It traces how communication broke down between the airborne divisions and the ground force, why the bridge at Arnhem became the operation's fatal chokepoint, and how Montgomery's plan unraveled within days despite its ambition. Archival photographs, maps, and battlefield footage are paired with narration that walks through the tactical decisions and missed opportunities, showing how a single overextended corridor turned a bold gamble into one of the war's costliest failures. The result is a clear, detailed account of why the mission to end the war by Christmas fell apart at Arnhem.