A teenage boy follows his ex-girlfriend to Mexico and discovers she is the virgin to be sacrificed unwillingly in a satanic ritual. Together they must escape the cult followers and cross back to the United States via an underground border-crossing path.
Isaac’s perfect night turns into nightmare when he fails to lose his virginity with his high school sweetheart, Laura. They breakup after that, and when new kid, Andy, arrives to school, Isaac feels threaten to lose her for good. Obsessed and jealous, he follows them on a romantic getaway that slowly descends into madness, through the valley of Texas and into Mexico via a clandestine border-crossing path. In a secluded beach house, a dark ceremony is about to take place. Four virgins, including Laura, are about to be sacrificed. He manages to save Laura and two other girls but with the cult followers on their trail, they still have to reach the border to survive. Aided by a Mexican ‘coyote’ the four teenagers fight their way against the satanists and cross the border through a tunnel that runs under the river, in order to go back home.