根据多个真实矿工场爆炸事件改编，讲述位于阿帕拉契山脉中地下两英里的矿工场，被困的九位矿工仅有一小时含氧量的氧气瓶，他们该如何逃出生天？

　　Cory and friends visit a broken down old shack in the middle of nowhere to investigate the mysteries of his past. After realizing that his grandparents dabbled in black magic, demons and the undead begin to attack, taking Cory's friends down one by one.