Two brothers. One mountain. Their destiny. The brothers Reinhold and Guenther Messner had a childhood dream of one day climbing the Nanga Parbat, the over 8,000 meter “naked mountain” in the Himalayas. In the year 1970, the time has come for the 25 and 23-year-old brothers. Under the guidance of the expedition leader Dr. Karl Maria Herrligkoffer, an elitegroup of international mountain climbers intend to conquer the peak. The route leads over the legendary Rupal Wall, the highest steep face on earth. After a bad weather forecast, Reinhold Messner decides to take to the top alone. Determined but with less experience than his brother, Guenther follows him. Then Guenther suffers from mountain sickness and, on the descent, the struggle for survival begins. Only Reinhold makes it back to the camp alive …