Ten years after becoming RoboCop, Alex Murphy finds his grown son, James, is an executive at Omni Consumer Products and doesn't know he is alive. RoboCop must also deal with his former partner, John T. Cable, being in charge of security at Delta City. Meanwhile, a new threat has emerged for Delta City, a crime wave launched by Bone Machine. RoboCop and Cable's investigation reveals a connection to the Trust, a group of OCP executives looking to take over the company. Making things worse, James is about to be brought into the Trust by Cable's ex-wife, Sara. The Trust reprogram RoboCop to terminate Cable before the investigation exposes them. Cable's only chance is to get through to RoboCop's human side. But this causes conflictions within RoboCop, which can lead to his destruction.
Cybernetically-enhanced mercenaries, led by Ann R. Key, try to steal technology from OCP. RoboCop stops them, but the murder of John Cable by the Trust has left RoboCop without his humanity, making him extremely violent. Unknown to RoboCop, the Trust have resurrected Cable into a new crime-prevention unit, RoboCable. Meanwhile, James looks into his father's death and uncovers some secret files. RoboCop battles Delta City Security and RoboCable. RoboCop recognizes him for who he really is, but the Trust have suppressed Cable's humanity. As the battle ensues, RoboCop is forced to retreat and escapes into Old Detroit. His only hope now is teamming up with Ann R. Key. Meanwhile, RoboCable and the Robohunters enter Old Detroit to find and destroy RoboCop.
After their battle, RoboCop and RoboCable are now wandering through Old Detroit. RoboCop is rescued and repaired just in time by Ann R. Key, Lexx and Abby. Meanwhile, RoboCable is captured by Dr. David Kaydick, who is plotting to unleash a deadly weapon. Back at OCP, Sara orders James to take a new squad of RoboHunters and find RoboCop.
RoboCop battles his way past the police and OCP security systems stop Kaydick before he releases his doomsday weapon. Once he reaches Kaydick, he must get past the repaired and battle hungry John T. Cable. The final battle has begun.
