 Son Goku Jr. is the grand-grandson of the legendary warrior Son Goku, unlike his predecessor he s not a brave fighter. He s constantly picked on by school bullies, his grandmother Pan sees this and she s worried, but even tough Goku is not a strong and powerful saiyan, he has a kind heart, and Pan loves him. When Pan gets sick Goku Jr. realizes he must do something if he doesn t want to lose Pan. Then he will remember about the legends of the Dragon Spheres. It was told they granted a wish to the bearer, Goku needs a magical wish more than ever.