Naoko Watanabe

In that story, Goku, Vegeta, Bulma and other characters throughout the series become younger than usual. However, this is different from a similar plotline in the Dragon Ball GT anime, in which Goku reverts back into a kid after the end of the original series.

It is the first Dragon Ball anime produced in 18 years and is set after the defeat of Majin Buu, when the Earth has become peaceful once again.

The Earth's Greatest Warriors are back in Dragon Ball Kai, an HD Remaster and Recut to commemorate the 20th Anniversary of author Akira Toriyama's hit anime Dragon Ball Z. Using Dragon Ball Z's footage, the series has been remade in high definition and recut, removing most traces of filler for the sake of a faster pacing, sticking closer to the original manga work.

Goku is accidentally wished back into his child form thanks to Pilaf trying to use the Black Star Dragon Balls. Now he, along with a grown up Trunks and his granddaughter Pan, must travel the universe to search for these Black Star Dragon Balls and return them to the Earth within one year, or the Earth will be destroyed.

Many years have passed since Goku first searched for the Dragon Balls. He is a grown man, with a wife and son. He and his friends have settled into their own lives and, for the most part, things are rather peaceful. Then one day, Goku learns he is really a Saiyan and comes from another planet. Now begins new adventures for Goku and his friends as they defend their home against new, more powerful threats.