In a futuristic world where robots live like humans, mysterious crimes follow each other. Famous robots and researchers are murdered under very strange circumstances. All the victims are found with a horn-shaped ornament on their heads. Gesicht, a robot inspector, is in charge of the case. He discovers that the victims are veterans of the last conflict in Central Asia, and that the robots targeted are the seven most powerful robots on the planet, of which he himself is a part! Inspector Gesicht then goes to meet the people and robots threatened to try to protect them from danger.