Emperor Pilaf finally locates the Black Star Dragon Balls after years of searching, claiming they are twice as powerful as Earth’s ordinary dragon balls. As Pilaf is about to wish for world domination, Goku interrupts him, causing Pilaf to mishandle the wish. The result is that Goku is turned back into a child, and the Black Star Dragon Balls scatter across the galaxy. Goku learns that if all the balls are not gathered within a year, Earth will explode. Joined by his granddaughter Pan and the young adult Trunks, Goku embarks on a universe‑wide adventure to recover the Black Star Dragon Balls and prevent the planet’s destruction.