Upper Mustang sits in the Nepalese Himalayas, a former forbidden kingdom the locals call Lo, where Tibetan Buddhism survives largely intact even as China tightens control over Tibet itself. Al Jazeera journalist Steve Chao travels there to document what is being preserved and what is being lost, as Chinese influence expands into Nepal and roads, phones, and outside money reach a place that for centuries could only be entered on horseback. The film traces the region's political weight back to the 1960s, when Tibetan resistance fighters based themselves in Mustang shortly after the Dalai Lama fled to India, a history that still shapes why Beijing watches the area closely. Chao meets monks, elders, and residents caught between guarding an ancient culture and accepting the conveniences and pressures of the modern world creeping in around them. The film treats Mustang less as a remote curiosity than as a small, exposed frontier in a much larger contest over Tibetan identity and Chinese reach.