“Super Boy (Volume 4)": In B-CITY, there is a bedlamite scientist--Dr. Toon. In order to find a target for his invented Assistant No.1, he invented one innocent and powerful robot target No. 1 (known as Walnuts). However, Walnut swallowed Dr's remote control and defeated Dr. Toon’s favorite robot!!! Since then, the wars began to outbreak frequently between Dr. Toont and uncontrolled robot.
