Big wall free climbing masters Babsi and Jacopo seek their greatest challenge yet: a free ascent of Eternal Flame, an elusive 3,000-ft. route up the legendary Nameless Tower in Pakistan’s Karakoram range. Facing extreme conditions and 5.13 trad climbing at high altitude, a two-year quest comes down to one short weather window. Captured with drones and on-mountain cameras in one of the most stunning places on earth, Burning the Flame  transports viewers to a place normally off-limits to all but the world’s best climbers.