In the latter half of the 21st century, robots have been engaged in labor in dangerous places, housework, etc. Then suddenly, the control system used to function these robots plotted a revolt against the human race, and ordered every robot to annihilate all of the people. The robots robbed them of their weapons, and occupied various military bases and factories. The war robots that were manufactured there murdered men one after another, and the survivors organized a resistance and went into a full-scale offensive against the enemy’s army. You are Joe, and you swear that nothing can stop you from destroying the control system which forces the robots to kill.
