K2. The Savage Mountain. Even the standard route is as deadly as mountaineering gets, while every alternative is steeper, more remote or barely explored. From the Duke of the Abruzzi’s expedition in 1909 and the tragedy of 1939 to the Italian first ascent of 1954, the Polish Line, Magic Line, Česen Route and deadly summer of 1986, the disasters of 1995 and 2008, the Russian West Face expedition and the still-unclimbed East Face, every generation has tried to find another way up. This documentary traces the history of K2’s routes, the climbers who opened them and the disasters they left behind — and asks why the holy grail of mountaineering remains its greatest challenge.