The series again continues the adventures of Goku, who is turned back into a child by Emperor Pilaf accidentally wishing this using the Black Star Dragon Balls in the beginning of the series and is forced to travel across the galaxy to retrieve them. The first half of the series focuses on Goku, Pan, and Trunks, while the second half brings back most of the prominent characters from Dragon Ball and Dragon Ball Z. It is the only series that is not based directly on the original story by Akira Toriyama.The series follows the Z Fighters against far more powerful foes such as the Luud Cult, the Machine Mutants, Baby, Super 17, and the Shadow Dragons.