Uub is strong, but has no fighting experience. Goku decides to take it upon himself to train with Uub, hoping one day his power will be strong enough to fight him. Goku and Uub say farewell, and fly off into the distance…

The episode was rated 7.84 from 45 votes.

As Goku and the others set off to join the Supreme Kai, Kibito uses his unique ability to restore Gohan's energy, before the two of them, along with Videl, set off after the others. Along the way, Supreme Kai and Kibito explain to the others about how an evil mage named Babidi is seeking to revive an evil being known as Majin Buu, who was responsible for the death of four Supreme Kais long ago. To accomplish this, he manipulated Spopovich and Yamu to join the tournament and steal Super Saiyan energy needed to break the seal placed on Buu. Unable to push her flight any further, Videl, coming to understand that Gohan was the one who defeated Cell back then, places her faith in him and returns to the tournament grounds, while Gohan and Kibito catch up to Goku's group. Arriving at the site of a buried spaceship, the Z-Fighters lay in watch as Spopovich and Yamu deliver Gohan's energy to Babidi and his partner, Dabura, the Demon King.

The episode was rated 7.88 from 59 votes.

As Vegeta easily outmatches Pui Pui in terms of fighting skill, Babidi changes the stage to match that of the high gravity planet, Zun, where Pui Pui is at his top fighting form. However, this makes no difference to Vegeta, who obliterates his opponent and opens the way to the next floor. Believing the Saiyans to not be underestimated, Babidi sends in his next warrior, Yakon, and changes the stage to that of Planet Ankoku, but even with the aid of pitch black darkness, Yakon is no match for Goku's keen senses. When Goku turns Super Saiyan, however, Yakon uses his ability to consume light and sucks in Goku's energy, turning him back into normal. Rather than finding an alternative way to fight, Goku instead feeds him even more Saiyan energy until he explodes from being overloaded, allowing Goku and the others to move onto the next stage.

The episode was rated 7.89 from 54 votes.

Vegeta begins his attack on Goku, killing several innocent people in the crowd without any remorse. Realising Vegeta had fallen under Babidi's spell on purpose purely for the sake of his grudge, Goku is left with no choice but to fight against him, despite Supreme Kai's attempt to stop him, and has Babidi warp them to somewhere they can fight alone. As Supreme Kai and Gohan decide to go on ahead and leave the two Saiyans to their fight, Babidi attempts to command Vegeta to kill them, but his pride defies even his master's demands.

The episode was rated 7.89 from 55 votes.

Armed with fusion earrings, Goku goes to the battle and attempts to fuse with Gohan. One of the earrings gets lost and Super Buu manages to absorb Gohan. With no one to fuse with, Vegeta arrives. Can Goku convince him to fuse?

The episode was rated 7.90 from 40 votes.

Speaking to the people of Earth, Babidi threatens far-reaching destruction unless Piccolo, Goten, and Trunks reveal themselves. Despite this, Goku endeavours to teach Fusion to the boys. Meanwhile, Gohan is taken to the sacred domain of the Supreme Kais, and returned to fitness by Kibito, but can he draw the Z-Sword from its resting place?

The episode was rated 7.90 from 40 votes.

Kid Buu follows the fighters to the world of the Kai’s. He begins his destruction by attacking Grand Kai’s planet. Kid Buu located Goku and Vegeta, who plays rock, paper, scissors to see who goes first. Goku is up

The episode was rated 7.92 from 38 votes.

Trunks arrives at Capsule Corp., and hurries to find the Dragon Radar, although his grandparents seem unconcerned with the danger they are in. Meanwhile, Goku desperately tries to delay Majin Buu, and learns first-hand the terrifying power that Buu possesses. Enticed by the promise of an even greater opponent than Goku, Buu begins to question his subservience to Babidi.

The episode was rated 7.95 from 38 votes.

Vegeta, willing to put his life on the line, begins his assault on Buu, managing to blast a hole through him. However, Buu manages to regenerate himself and builds up his anger to create a giant explosion, dealing heavy damage to Vegeta.

The episode was rated 7.96 from 47 votes.

With Spopovich nearly beating Videl to death, Gohan loses his temper and prepares to storm onto the field, but Spopovich's partner, Yamu, convinces Spopovich to end the fight by pushing Videl out of the ring. With Videl heavily injured, Goku uses his instant transmission to receive some senzu beans from Korin, which Gohan gives to Videl to restore her to full health. Gohan, whose identity is revealed to his classmates after his bandana was blown off during his outburst, steps up to face against Kibito, who requests to see Gohan's Super Saiyan transformation. After Piccolo informs the other Z-Fighters of Shin's identity as the Supreme Kai, he orders Gohan to transform. Right after Gohan transforms, Spopovich and Yamu appear and use a device to drain his Super Saiyan energy, leaving him weakened. As Kibito offers to tend to Gohan, the Supreme Kai asks Goku and the others to join him in pursuing the culprits.

The episode was rated 7.96 from 54 votes.

A reluctant Vegeta and Goku fuse, and a new super fighter is born! Vegito! Instantly holding the upper hand, Super Buu makes a desperate move – entering Vegito’s body and attempting to control him from within.

The episode was rated 8.02 from 43 votes.

Goku powers up to Super Saiyan 3 and continues to fight Kid Buu. As Vegeta observes the fights, he reminisces of his fights with Goku.

The episode was rated 8.07 from 43 votes.

Goku fires the Spirit Bomb at Kid Buu, who attempts to fight it. Vegeta makes the final wish from Porunga to restore Goku to full power. At long last, Majin Buu is final defeated!

The episode was rated 8.09 from 43 votes.

As Vegeta is ensnared by Buu, Trunks and Goten can no longer stand by, and rush to the scene to rescue him, while Piccolo attacks the defenseless Babidi and rips him to pieces. Feeling he cannot defeat Buu with conventional means, Vegeta says his farewells to Trunks before knocking both children out, instructing Piccolo to take them far away. Once everyone is clear from the scene, Vegeta uses his last resort, overloading his Super Saiyan for and sacrificing himself in a massive self-destructive explosion in order to obliterate Buu.

The episode was rated 8.38 from 53 votes.

Realizing that Majin Buu is headed for Capsule Corp., Trunks breaks off from his Fusion training, and heads home to retrieve the Dragon Radar. To buy him the time he needs, Goku engages Majin Buu, and showcases a new level of power. Far away from the fighting, Mr. Satan pledges to save the people of Earth from Majin Buu.

The episode was rated 8.39 from 44 votes.