布莱恩无意间被一个自称是脑魔的怪物附体，这种怪物所分泌出来的汁液能够让人获得至高无上的快乐，但同时也会带来地狱般的痛苦。布莱恩被脑魔折磨的死去活来，更要被迫杀人以便满足脑魔的日常需求……

Two strangers feel a supernatural connection after being involved in the same accident.