Standing Up For Himself. Boo Rebels!
While Trunks races through Capsule Corp in search of the Dragon Radar, Goku pushes himself to the limit to keep Majin Buu occupied, experiencing the monster's overwhelming power firsthand. Intrigued by Goku's promises of a future, even greater opponent, Buu begins to view his current situation in a new light, creating friction with Babidi.
Aired 26/10/2014EP 29 - Standing Up For Himself. Boo Rebels!
Dragon Ball Z Kai: The Final Chapters
Since Cell's defeat Gohan has grown up and go to the university then she meets Videl which who has some adventures, then both and his new brother Goten are training for the new tournament, in which Goku came back from the dead for one day. In half of the tournament a misterious persons advice the group about the resurrection of the dangerous Majin Boo, but all plans fails and every one try new ways to stop The dangerous Majin Boo who gets stronger each time. Goku and his friends make everything for stopping them through fights.
(Source: Anime News Network, edited)
Note: Remastered version of the Majin Boo arc that adheres more to the manga's story.