In 1993, when computer technology has become greatly advanced, a society in which robots and human beings live together will be achieved. It sounds like a dream. However, robots bring about great benefits to human beings in many fields of the industry and in daily life. Of course, robots are good friends to children at the same time.
Among the many robots, Arbegas, produced by three youngesters, Daisaku Enjoji, Hotaru Mizuki and Tetsuya Jin, is the most important one because it fought for human beings. The legend of this will be handed down from generation to generation.