In 1979, Doctor Nicolas Jaeger tested his body resistance to hypoxia, i.e. the lack of oxygen, living for two months at an altitude of 6,700 metres. A year later he would die while climbing Mount Everest. Adventurous scientists risk their own lives while exploring the limits of their bodies. The human body is a marvellous and sophisticated machine which, under extreme conditions, draws upon primitive mechanisms of survival that science is only beginning to understand. We watch live the resistance of Doctor Jaeger, guinea pig as well as doctor, faced with hypoxia, as he spends two months at an altitude of 6,000 metres; with only a third of the necessary oxygen will he be able to adapt to the physiological challenges he is exposing himself to?