Assistir Do Libreflix. Danger, toil, and superstition pervade life in a mining town high up in the Bolivian mountains. Tin is the heartbeat of the community providing jobs and livelihoods - but at considerable cost. With deaths commonplace, people make offerings to El Tio, the devil under the earth, for protection and good fortune. But when the mountain's flow of tin ebbs, further measures must be taken...