The "Lyon Premier 8000-Gasherbrum II 8035m" expedition, organized and led by Jean-Pierre Frésafond in 1975, was sponsored by the Lyon section of the Club Alpin Français and by Louis Pradel, Mayor of Lyon. The film traces the departure from Lyon of Berliet heavy trucks loaded with equipment, daily life in Pakistan, preparation for the expedition and the approach march with the porters, daily life at the base camp and in the camps. altitude of the members of the expedition: L. Audoubert, Marc Batard, F. Bourbousson, A. Chariglione, J. Dupraz, J.J. Forrat, H. and JP. Frésafond, B. Macho, Doctor A. Raymond, Y. Seigneur, J. Soubis, F. Valençot, B. Villaret de Chauvignypuis. Finally On June 18, 1975, Yannick Seigneur and Marc Batard reached the summit by opening a route along the south ridge. Bernard Villaret de Chauvignypuis, who was killed during the second assault, was the first victim of the Gasherbrum.