Give Me Energy! We'll Make a Huge Spirit Bomb!!
With Earth restored, Goku prepares a legendary technique that relies on the strength of every living soul. However, convincing the unsuspecting people of Earth to heed a strange, disembodied voice and lend their energy proves to be an unexpected obstacle. As time runs out and Majin Buu closes in, the fate of the universe hinges on whether humanity will answer the call.
Aired 31/05/2015EP 57 - Give Me Energy! We'll Make a Huge Spirit Bomb!!
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.