Some American tourists go to see a Mayan temple that’s off the beaten path, and discover just why no one has ever heard of the ruins.
Jeff (Jonathan Tucker), Amy (Jena Malone), Eric (Shawn Ashmore), and Stacy (Laura Ramsey) are two American couples vacationing south of the border.
They meet German tourist Mathias (Joe Anderson) on a night of drunken partying on the beach. The next day Mathias proposes that the two couples accompany him to some ruins that his brother is exploring on an archeological dig.
When a group of tight-knit college friends visit the site of an undisturbed Mayan ruin, they stumble into an ancient trap where an unspoken evil is waiting to drag its victims into an endless nightmare. As fear and paranoia eat away at their sanity, their only chance at escape is to commit the unthinkable.