Luster 莱斯特, 是一个内向谨慎, 因失眠而神经衰弱的景观设计师, 他发现每天早上起床後总是累趴趴的. 直到有一天. 他怀疑自己患了梦游症, 当他睡觉後, 常干出一些自己都不记得的鸟事, 於是开始寻求朋友的协助。问题是, 他的朋友不是失踪就是死了, 且证据显示是莱斯特干的, 警察也找上门, 这回他可慌了.....因此, 为了保护妻子, 他必须振作起来, 勇敢对抗另一个自己, 论战术, 论心智, 论聪明度, 他是否对抗得了另一个邪恶的自己呢?Thomas Luster is a troubled businessman who tries to make sense of a life being driven out-of-control by a force closer to home than he first realizes. When he discovers that the man working against him is another side of his own personality he is forced to fight back against his manipulative alter-ego as murder, madness and mayhem combine to take Luster on the most bizarre and terrifying ride of his life.