Mixed climbing, that is on ice and rocks, is one of the most adventurous techniques of climbing and it holds a strong attraction for Robert Jaspar, one of the best mountaineers in the world. He has done some of the most difficult climbs in the Alps, the fastest climb of Cerro Torre in Patagonia, sports climbs up to grade 10 and expeditions to various mountains in the world. Daniela, his companion on the mountains and in life, seems to be at her ease in the most difficult climbs and in the ice gorges. In winter 1997/98 Robert and his wife managed, in Wallis, to complete a mixed climb of four lenghts of rope called the " Flying Circus", one of the most difficult routes in the world and so severe that the Jaspers could claim a new grade of difficultty. The enthralling scenes of the first ascent of the "Flying Circus" form the backdrop of the subject of this film which gives us a portrait of Daniela and Robert Jasper.