A group of American fortune hunters come to China looking for a long-lost-treasure. During the Soviet crack-down on religion in the 1930’s, a priceless Buddhist artefact, a Tangka was taken across the border to China and hidden in the mountains. The diamonds alone, decorating this huge gold-inlaid textile, are thought to be worth $50 million. The fortune hunters need a guide and protection on the trip, so they hire an American ex-pat, Ronson. He’s ex-Army and living an existence in Inner-Mongolia of drinks, women and bare-knuckle fights. The group takes off into the Mongolian mountains on a trek that will change their lives forever. For not only is this Tangka wanted by ruthless Russian mercenaries, but it’s also protected by something much more sinister.