S2, E1: It is in the heart of the Ardennes massif that will take place one of the bloodiest battles of the Second World War. A few days before Christmas, 500,000 Germans are preparing to stampede on the allied forces stationed in the sector. In the early hours of the assault on December 16th, 1944, the American forces are taken by surprise. Discover what actually happened in Ardennes in the winter 1944.