一位著名的驱魔人和一位菜鸟牧师组成团队，来对牧师进行训练。当他们深入这个世界上的地狱时，善与恶的边界变得模糊，他们自身的恶魔也显现出来。

　　After some tragedies, a couple moves back to her childhood home. Robert discovers an old portrait of a man who looks like him, he goes down a rabbit hole to discover the identity of this mysterious doppelganger.