A Secret Plan to Defeat Boo, It's Called Fusion!
As Bulma's group sets out to gather the Dragon Balls, Piccolo and Krillin bring the young Saiyans to Kami's Lookout for safety. Rejoining his allies, Goku assesses the threat posed by Majin Buu and realizes his current power is not enough to secure victory. However, Goku reveals knowledge of a unique technique learned in the Other World that could turn the tide, placing the responsibility for the world's future onto unexpected shoulders.
Aired 21/09/2014EP 24 - A Secret Plan to Defeat Boo, It's Called Fusion!
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.