Maria (Ann Henson) comes across an abandoned school bus in the middle of nowhere, with "Help Me" scrawled on one of the windows. Amid the bloody scene inside, Maria discovers a young woman who's survived (Gretchen Busenitz). The madman behind the slaughter returns and drives his two captives to a castle in the desert, the site of nightmarish torture. The women's terror turns to confusion when they discover that their captor isn't the only threat.