Goku and Vegeta successfully venture inside Super Boo's body to rescue their captured sons and Piccolo, but pulling out the original, fat Majin Boo triggers a terrifying reverse evolution into Kid Boo—the monster's original, pure, and completely unhinged form of absolute malice. Kid Boo immediately vaporizes the entire planet Earth, forcing Goku and Vegeta to retreat to the sacred Sacred World of the Kais for a final, desperate stand. Vegeta bravely fights to the absolute brink of death to buy time while Goku gathers the energy of every single living being across the universe. With a massive, universe-spanning Spirit Bomb, Goku launches the final strike, completely vaporizing Kid Boo and bringing a permanent, peaceful end to the legendary Dragon Ball Z era.