Supreme Kai reveals his plan to teach Gohan the art of mastering the legendary Z-Sword in order to defeat Majin Buu. Meanwhile, Goku teaches the fusion technique to Goten and Trunks.

Babidi and Majin Buu plan to destroy West City, however Goku confronts them, hoping to buy some time. Meanwhile, Trunks is on a mission to retrieve the Dragon Radar from West City, which will be destroyed if Buu gets there first.