Nazo no Dragon Ball Shutsugen!! Gokuu ga Kodomo ni!?

Plot:

Start of the "Ultimate Dragon Balls/Black Star Saga". After finishing his training with Uub, Goku is turned into a child by a careless wish from Emperor Pilaf, who has summoned the eternal dragon using the black star dragon balls. Afterward, Goku, while re-adjusting to life as a kid, learns that if he doesn't find the black star balls, which are now scattered across the galaxy, in one year's time, the earth will be destroyed. Also, Pan stops a bank robbery.