Omni Consumer Products (OCP) begins its plan for the creation of Delta City. As part of this program, a special Rehab squad leaded by Commander Paul McDaggett is deployed as they evacuate the city in a forced manner tearing down part of the city. In this chaos, a young girl named Nikko is left alone and picked up by a group of citizens joining together to strike on OCP, first raiding a Police Department Armory Warehouse. Murphy is sent to the chase of this group, but he eventually ignored the order when he received a back up call from Anne Lewis and the other officers who were attacked by a group of Cyber Punks. This violation leads to the decision of finally cutting Murphy's past memories for good, as he finds himself between the line of Law Enforcement and Popular Opinion when the law is beginning to be corrupted, and he is betrayed by the law he sought to uphold when Lewis is killed, and he is left for dead... all of this thanks to Directive 4: "Any attempt to arrest an officer of OCP results in Shut Down." At the same time, the new younger CEO of OCP begins relations with a Japanese Cybernetics Corporation leaded by a man named Kanemitsu for Monetary support, leading into the deployment of the advanced Android Otomo, a fully skilled Ninja with full human appearance, but still a machine. Slowly as all of Detroit joins the Motor City's cause, including the Police Department, McDaggett sees use for the arrested criminals to create his own army of criminals to strike down the City's militia once and for all. The only hope, Murphy overcoming the control placed on him by Directive 4, and bring down this corrupted plan.

At least two of the characters in RoboCop 3 (1993) are based on Frank Miller's own comic-book creations. Otomo, the cyborg samurai, is a nod to his 'Ronin' comic about a masterless samurai whose spirit is reanimated with futuristic biotechnology. Bertha Washington (CCH Pounder), a freedom fighter in the film, is a reference to Martha Washington, the freedom fighter from Miller's "Give Me Liberty".

Seitz:
What about our friend, Coontz?


McDaggett:
Well, if we let him live, then we would have to have paid him.

Revealing mistakes: Right after Robo is hit by the grenade, you can see that the bottom of his feet are not covered.

Written by Billy Hayes and Jay Johnson
Performed by Elvis Presley
Courtesy of the RCA Records Label Of BMG Music