In 1951, the 3rd French expedition to the Himalayas set out to conquer Nanda Devi (7,800 m). The attempt to cross the ridge between the main peak and Nanda Devi East resulted in the death of two members of the expedition. Expedition leader Roger Duplat and Gilbert Vignes disappear on the ridge somewhere below the main peak. Tenzing Norgay is part of a support team on this expedition; he and Louis Dubost climb Nanda Devi Est in search of the two missing people. A few years later, Tenzing discovered that Nanda Devi was the most difficult climb he had ever made.

This film - without commentary and simply accompanied by local music - relates the 1969 ascent of the north face of Kohe Shakhawr, a Himalayan peak located on the border with Afghanistan, by mountaineers Benoît Mathieu, Jacques Soubis, René Thomas, Jean-Paul Paris, Isabelle Agresti, Henri Agresti, Roger Dietz, Jean-Pierre Frésafond, Paul Gendre, Claude Jager and Félix Magnin. As is often the case in Henri Agresti's films, there is an encounter with other peoples, other cultures, documented at length in the introduction. Then, after the interminable approach, the ascent begins: distribution of camps, successive assaults on the mountain, walking on steep scree and snowy slopes, climbing on icy walls... The arrival at the summit, without the aid of oxygen devices, seems to take place in slow motion: exhaustion mixes with the joy of the victorious mountaineers who will celebrate their success on their return to base camp on August 24, 1969.