The frightening story of the weeks leading up to and following a nuclear strike on the United States. The bulk of the activity centers around the town of Lawrence, Kansas.

Detroit - in the future - is crime ridden, and run by a massive company. The company have developed a huge crime fighting robot, which unfortunately develops a rather dangerous glitch. The company sees a way to get back in favour with the public when a cop called Alex Murphy is killed by a street gang. Murphys body is reconstructed within a steel shell and named Robocop. The Robocop is very successful against criminals, and becomes a target of supervillian Boddicker.

Martin Riggs and Roger Murtaugh, after escaping death from the previous movies are put on a hit list by The Triads. When blood thirsty mercenaries are on their tail they team up again with Leo Getz and Lorna Cole, a newcomer (Chris Rock) to finally put an end to the Triads for good.