After he follows a wealthy runaway debutante from Boston to the Yucatan Peninsula of Mexico, an American investigator must hire a local guide to lead him into the dense jungles of the Mesoamerican interior in search of her. As they penetrate deeper into the forest, civilization disappears and they find themselves lost amid a mysterious land of bloody legend and savage myth. Within the ruins of a forgotten Mayan city, they ultimately encounter a contemporary death cult and discover the old gods reawakened. Five centuries ago, countless Mayans perished atop the chacmool, their beating hearts ripped from their bodies. Who will make sacrifice tonight when contemporary witches resurrect an ancient religion amid Yucatan jungles?