Storyline

In a world where science and technology have developed a little more than they do now, a man named Steel runs a machine repair shop in a certain forest. He is a skilled mechanic and is loved by the people. Steel invented a metal called "konnyaku mithril" that can be processed into any shape or hardness, making it an indispensable material for repairs. But one day, someone steals the mithril and manufacturing machine from the repair shop. A confused Steel is approached by Dr. Bronze, an authority on robotics. "Robots cannot exist without collecting various technologies from all over the world. Your technology will be sacrificed for the success of my research!" Soon after, robots made under Bronze's name began to spread all over the place in an instant. Now, Steel stands up to dismantle robots all over the place and take back the stolen technology.