This documentary is a reconstruction, based on archive footage, testimonies, and filmed reconstructions, of the Vincendon / Henry tragedy. December 1956: Jean Vincendon and François Henry, two young mountaineers, aspire to join the High Mountain Group. Lacking experience, they set out to climb Mont Blanc via the Brenva spur in the middle of winter. The weather conditions deteriorated, and they decided to give up before meeting Walter Bonatti and Sylvano Gheser. They then decided to continue the ...