This film also represents a complete novelty for that time; the filming of a mountain rescue. We are on the Mont Blanc and the great guide Lionel Terray meets a group of film-makers who, having made his acquaintance, change their plans and join the famous mountaineer in recreating an event that actually occurred during the war. With him they discover the real mountain and its thousand unforeseen features. They climb to the mountain refuge where the alarm goes for help. Two roped parties manage to arrive about 60 metres from the climbers stuck on the rock. Thanks to the rescuers' ability and the inventiveness of one of the blocked climbers, a seemingly impossible rescue is achieved. Lionel Terray and Michel Vaucher celebrate by repeating the east wall of Grand Capucin along the Bonatti way and the sky above them is such a deep blue that they can see the stars shining: precisely the "midday stars".