Electroc corp has created a Supervisor Droid, which can take on any form and access any database. However, an EGO virus infects the droid's self-awareness, causing it to consider its own needs above those of the company. This leads to the other robots in the plant being infected, declaring themselves leader. To stop them, a top-secret Cyborg is sent into the plant.
The game features three modes: mission, where players fight each robot in a set order; training, where players can fight any robot in any order; and two-player versus mode, absent in the Game Gear version. The AI system reacts to the player's style, 3D rendered cutscenes, and the title song was composed by Brian May.