When a Dallas-area priest, Father Billy Acosta, believes he’s been shown a miracle by God, instead of being uplifted, ensuing weeks of doubt make him demand to see a second one. Driven crazy by what he feels is God’s silence, he heads to his church’s East Texas summer camp to massacre 99 kids - one at a time - to bring about Divine Intervention. Among the campers are four 14 year-olds - Phil, Mark, Faith and Maia - who are forced to come of age in the Texas woods, cut off from civilization, as their friends begin dying in horrific fashion, convinced as they are that the Devil has come to Earth and is slaughtering the faithful.