佩德拉萨是西班牙的一个偏远小镇，被莫名其妙的恶魔事件所困扰，大多数居民都失去了理智，被关在精神病院里。陷入昏迷的Elena（Megan Montaner饰）躺在马德里医院的病床上，因悔恨而崩溃的Paco（Miguel Ángel Silvestre饰）试图照顾她。随着恐怖的加剧，主人公们必须面对

　　The unsolved case of two girls who disappeared from the Pyrenee town of Monteperdido five years ago is reopened when one of them reappears.