For the first time in nearly 20 years, documentary cameras go undercover inside Tibet to investigate China's growing control over its population. Under fear of arrest and facing Beijing's highly-advanced state surveillance, the filmmakers reveal what life is like inside one of the most heavily-guarded and underreported regions in the world. As he reaches 90 years-old this year, the succession of the Dalai Lama - Tibet's exiled spiritual leader - is approaching a critical point. The film investig...