Kelsang Namtso, a young Tibetan nun, is shot dead by Chinese border police while crossing the Nangpa Pass with a group of pilgrims trying to reach Nepal. The killing happens in view of an international mountaineering camp nearby, and climbers there turn their cameras on the border patrol as it fires on the fleeing group, catching footage that later travels around the world. The film builds its account from that video and from photographs the climbers took, along with interviews describing what they saw and how they helped the survivors afterward. It follows the pass itself as a physical obstacle, an ice field crossed on foot at altitude, and traces how amateur footage from bystanders turned a remote killing into an international story that reached governments and human rights organizations. The film sets Namtso's death against the wider pattern of Tibetans crossing the Himalaya to escape Chinese rule, using one filmed incident to show what usually happens unrecorded and unseen.