In an attempt to solve their marriage problems, Eric and Mari take a road trip through the jungles of the Mexican southeast, but she disappears under mysterious circumstances. On his way back to Mexico City, Eric meets Narciso, a mysterious man, and gives him a ride. While traveling together, Narciso encourages Eric to tell him about the strange circumstances surrounding his wife's disappearance. Eric describes a series of weird events which finally lead him to a devastating revelation about the time he shared with Mari.