Synopsis
After a lengthy quest, Emperor Pilaf finally locates the Black Star Dragon Balls, rumored to be twice as powerful as Earth's regular Dragon Balls. As he is about to wish for world domination, Gokuu Son intervenes, causing Pilaf to fumble his incantation and accidentally transform Gokuu back into a child. Once the wish is granted, the Black Star Dragon Balls scatter across the galaxy. Gokuu discovers that unless they are recollected within a year, Earth will be destroyed. To avert this disaster, he joins forces with his granddaughter Pan and the young adult Trunks, setting off on an interstellar journey to retrieve the scattered balls and save their planet.
Background
Dragon Ball GT was produced by Toei Animation with minor involvement from Akira Toriyama, who assisted in creating the show's premise and designed most of the new villains and main protagonists. Toriyama referred to the series as "a grand side-story of the original Dragon Ball".