Who Will Defeat the Majin? The Strongest Man Sets Out!!
Emboldened by their newfound fusion power, the newly created warrior rushes headlong into battle, determined to hunt down and destroy Majin Buu once and for all. Meanwhile, unaware of the incredible developments at Kami's Lookout, the self-proclaimed hero Mr. Satan sets out on his own desperate mission to locate the monster, seeking to save humanity through his own unique approach.
Aired 30/11/2014EP 34 - Who Will Defeat the Majin? The Strongest Man Sets Out!!
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.