A giant castle in a mysterious world. Two shady Majin, Gomah and Degesu, watch a monitor. The monitor shows Goku and the others having a fierce battle against Majin Buu. Gomah and Degesu head to Earth to execute a certain conspiracy.

Goku and his friends have been turned small due to Gomah's scheme. They begin preparing to go to the demon world. Goku collects his Nyoibo and looks forward to a new adventure. Then the mysterious young Majin Glorio appears!

The fight with a Tamagami begins! The Tamagamis are the undefeated guardians of the Dragon Balls. Seeing Goku fight toe-to-toe with one, Panzy and the others are unable to hide their surprise. As the battle heats up, what will happen?!

To stop Goku's advancement, Gomah commits an unbelievable taboo! Goku and his companions can no longer proceed. Just when it seems their adventure is over, a certain someone reveals their true power!

Goku and his companions face off with Arinsu. With everything on the line, their battle begins. But all of a sudden, a transformed King Gomah stands before both parties!