这是一部典型的史泰龙式的科幻电影。2139年，科学高度发达。凭借高科技武器和过人身手，爵德（西尔维斯特•史泰龙 Sylvester Stallone 饰）成了梅洛城法官、警察和行刑人于一身的判官战警，他发现罪犯可以马上逮捕、马上判刑，死刑的话还可以马上执行。就是这样一个四出惩治罪恶的判官，这次竟然被诬蔑成杀人犯。 幸好有主席法官尽力相助，爵德才幸免一死，不过他被逐出了梅洛城。不甘心含冤受屈的爵德冒险潜回了梅洛城调查整件事的来龙去脉，犯罪分子里戈（阿曼德•阿山特 Armand Assante 饰）逐渐浮出了水面……In the year 2139, the Earth has changed into a virtually uninhabitable place called the Cursed Earth. All of the Earth's population have crowded into the cities across the planet, now known as Mega-Cities. The crimes in these Mega-Cities became so violent and so powerful, that the regular justice system was powerless to contain, then it collapsed completely. However, a new justice system came from the ashes, there were three justice systems in one (police, jury and executioner), they were called Judges. In Mega-City One (formerly, New York City), there was a Judge, named Joseph Dredd, who was the toughest and most stringent Judge in history. One day, he was charged with murder, and was tried and sentenced to life in prison because of it.
