In the summer of 1973, dozens of teenagers were lured to a remote plantation by a charismatic cult leader and brainwashed into attacking anyone outside their group. What followed was a killing spree of unimaginable brutality. The horrendous crimes were covered up and the only survivor locked away. The secrets of the Plainsong Massacre remained hidden... until now. Seven teenage tearaways - looking for a place to skateboard, drink beer and raise hell - drive a stolen truck to the long-abandoned plantation. The high-spirited teens initially laugh off the blood-stained walls and mysterious symbols but, with night falling, it becomes clear they are being stalked by a force of pure evil and limitless power. As childhood friends fight for survival, they discover the horrific truth about the massacre, and Mikeys footage builds to a final confrontation that echoes all our nightmares.