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!

While hiding from the authorities, Goku, Pan, and Trunks become moved by the injustices that the Imeckans suffer under the oppressive Don Kee. They decide to confront The Don, and head straight for a showdown at the Royal Palace. It seems like an easy victory until Ledgic appears from the shadows!