Age 789 is a major year in the Dragon Ball universe. It marks the time in which the Dragon Ball GT series began up until the conclusion of the Baby Saga. It sees the major battles of the Black Star Dragon Ball and Baby Sagas.
- Goku is turned back into a child by Emperor Pilaf using the Black Star Dragon Balls.
- On Imecka, Goku fights Lord Don Kee's Army along with Trunks and Pan after crash landing.
- Giru eats the Dragon Radar and later joins the search.
- Goku, Pan, and Trunks' adventures to find the Black Star Dragon Balls in space.
- Goku, Trunks, Pan and Giru fight against the Luud Cult on Planet Luud.
- On Planet M-2, Goku fights against the Sigma Force and General Rilldo.
- The Machine Mutant, Baby takes over Vegeta's body and almost everyone on Earth.
- Baby uses the Black Star Dragon Balls to wish for Planet Tuffle's recreation.
- Majin Buu merges with Uub to form Majuub.
- Goku transforms into a Super Saiyan 4, and defeats Baby.
- The Earth is destroyed for the second time, as a result of a wish made by the Black Star Dragon Balls.
- Piccolo is killed for the final time, as a result of perishing with the Earth to destroy the Black Star Dragon Balls.