A missing passenger from an airplane crash in the jungle leads Alex McCade and Mike Garrison to a mysterious lost Mayan city. Here they uncover a devious plot by the powerfully elite to cause death and suffering of millions in exchange for immense wealth. The world is on the brink of disaster. Alex and Mike must stop them before it's too late. But how? Is it possible the answer lies in the ancient civilization of the Maya? Can the Secret of a 500-year-old Mayan King save humanity?