In a lonely outpost atop the treacherous Mont Blanc, an intrepid scientist lives with minimal connection to the world below. Through the telegraph, Hannes (Sepp Rist) communicates with a beautiful astronomer (Leni Riefenstahl), and is occasionally visited by an airplane pilot (Ernst Udet) upon whom he depends for supplies. In the midst of a ferocious snowstorm, Hannes loses his...