Il film allows us to share the passion and doubts of four generations of climbers. Together with Jacques Grandjean we try to reach the crystals shining on the friable rock of sheer rock faces. On the north face of the Gross Ruchen, Dani Arnold curses the storm that has struck. Stephan Siegrist takes us with him on an expedition to Makalu’s West Pillar, while Werner Munter, despite having reached the venerable age of 70, is still looking for new routes in the wildest corners of the Val d'Hérens.