人类科技高度发达，能够制造出外形与人类无异的复制人为人类工作。但人类也惧怕这些复制人有自己的思想和意志反过来对人类不利，于是制造之初这些复制人就被设计只有四年的生存期。四年一到这些复制人自动报废，新一代更高级的复制人会被再制造出来。现在复制人已经更新到第六代，他们出类拔萃非常优秀，而且投进人群里几乎很难识别。他们不甘被人类奴役，也不甘只有四年生存期，于是反叛出现。人类为此成立专门机构猎杀复制人，这些杀手就被称为银翼杀手。因为还有四个特别狡猾的复制人仍然逍遥法外，警方请退役的银翼杀手戴克重出。戴克开始了猎杀任务。此时四个复制人的头领罗伊不甘短暂的生存期，他积极寻找延长生命的办法。可设计者博士表示无能为力，罗伊绝望地杀了博士。戴克在追杀罗伊时被罗伊反制，就在戴克以为罗伊会杀死自己泄愤时，罗伊四年的生存期已经临近界限，他反倒出手救下戴克。罗伊死了，但戴克却对自己的任务产生了困惑

Human science and technology are highly developed, and they can create replicas that look exactly like human beings to work for human beings. But humans are also afraid that these replicants have their own thoughts and wills, which will be detrimental to humans, so these replicants were designed to have a survival period of only four years at the beginning of manufacture. After four years, these replicants will be automatically scrapped, and a new generation of more advanced replicators will be remanufactured. Now the duplicants have been updated to the sixth generation, they are outstanding and very good, and it is almost difficult to identify them in the crowd. They were not willing to be enslaved by humans, and they were not willing to live for only four years, so a rebellion emerged. For this reason, human beings set up special agencies to hunt and kill replicants, and these killers are called blade runners. With four particularly cunning clones still at large, the police brought in retired Blade Runner Deckard to return. Deckard started the hunting mission. At this time, Roy, the leader of the four replicants, was unwilling to live for a short period of time, and he actively looked for ways to prolong his life. But the designer, Dr., said he was helpless, and Roy killed the doctor in despair. When Deckard was chasing Roy, he was countered by Roy. Just when Deckard thought Roy would kill himself to vent his anger, Roy's four-year survival period was approaching the limit, so he rescued Deckard instead. Roy died, but Deckard was confused about his mission