This documentary follows archaeologist Steve Bourget's race against the clock to explore and preserve what remains of a mysterious Precolumbian civilization in Peru. Mr. Bourget confronts the looters of ancient tombs, who often are just impoverished local peasants tempted by the offers of the middlemen working for international traffickers and collectors. A fascinating behind-the-scenes investigation of the international trade in archaeological relics, a business that ranks third worldwide after drugs and arms.