剧情介绍故事发生在未来的加州橘子郡,那是一个没有隐私的荒谬年代,每十个美国公民中大概有两个是暗中受政府委托,以国家安全和毒品管制的名义监视其他的八个人。弗莱德(基诺·里维斯饰)就是其中一个刚刚接受委托,内心却十分抗拒这项监视任务的缉毒密探。他的最新目标是毒贩鲍伯,奉命在其住处暗中装上最先进的全景监视器,以便24小时盯梢。但令人迷乱而又抓狂的事实真相却是,弗莱德其实就是鲍伯,他正在自己监视着自己!原来他同时拥有两个身份,“弗莱德”是与上司联系时的代号,“鲍伯”则是卧底时的化名。在与一帮毒虫鬼混,以查出迷幻药“死亡物质”(Substance D)的制造来源之时,鲍伯就已深陷毒癮。因为服用了过多的“死亡物质”,他的大脑开始病变,除了幻象、幻听,他的左右脑逐渐分裂成两个相互对抗的意识系统,他自己却浑然不知。渐渐地,他也搞不清,鲍伯？弗莱德？哪个才是真正的自我…… Plot introduction The story takes place in the future of Orange County, California, an age of privacy without privacy. About two out of every 10 U.S. citizens are secretly commissioned by the government to oversee the other eight in the name of national security and drug control. Fred (Keno Reeves) is one of the drug detectives who has just been entrusted with the very heart of the surveillance mission. His latest goal was drug dealer Bob, who was instructed to secretly install a state-of-the-art panoramic monitor in his home for 24-hour tracking. But the confusing and crazy fact is that Fred is actually Bob, who is monitoring himself! It turned out he has both identities, “Fred” is the code name when contact with the boss , “Bob” is the anonymity of undercover. Bob was already addicted to drugs when he was fooling around with a bunch of poisonous insects to find the source of the Substance D, the psychedelic drug. Because of taking too much “dead substance,” his brain began to change. In addition to phantasmagoria, his left and right brain gradually split into two opposing systems of consciousness, but he himself did not know it. Gradually, he could not figure out, Bob? Fred? Which is the real self ...