Dragon Ball GT - Season 1 Episode 1 A Devastating Wish
Overview: After decades of persistence, Emperor Pilaf finally steals the dragon balls and summons Shenron! But Pilaf slips up yet again and wishes Goku back to childhood size!. As Goku tries to present his new self to his family, King Kai reveals alarming news. If the dragon balls aren't returned to Earth within one year, the entire planet will explode!