Goku keeps battling the inexperienced Uub to draw out his hidden potential and soon forms a bond with him as the boy discovers the power within himself.
Ten years after the Buu incident, Goku, Goten, Vegeta and Trunks enter the latest World Martial Arts Tournament with Gohan and Videl's young daughter, Pan; Goku eagerly faces off against a familiar competitor named Uub.
The warriors gather at Capsule Corp. on Earth to celebrate Buu's defeat.
Buu resists Goku's Spirit Bomb and the fighters become deadlocked as they focus all their energy to push the bomb toward one another; Vegeta comes up with a third wish to ask Porunga that can break the stalemate.
With the good Buu's power exhausted, Vegeta steps back into the fight against the other Buu; Goku tries and fails to convince Earth to give him more energy for the Spirit Bomb, but one ally opens people's hearts with a passionate call for support.
Vegeta implores the newly restored people of Earth to offer their energy for Goku to create a massive Spirit Bomb to throw at Buu, but his pleas fail to stir the populace into action.
The good Majin Buu and Mr. Satan intervene to save Vegeta, taking the heat off him long enough for him to coordinate a plan with Dende and the Kais; the Namekians gather the Dragon Balls on New Namek for Dende to make two big wishes.
Goku talks a demoralized Vegeta into fighting Buu again, needing one minute alone to power up for his next attack; Vegeta risks his own spirit's existence to fight a losing battle against Buu.
Goku blasts Buu with a Kamehameha, but it proves useless when Buu re-forms himself again; Vegeta's attempt to help Goku ends in a brutal pounding, forcing the proud Saiyan to acknowledge Goku's superior strength.
Buu destroys planets with reckless abandon until Goku and Vegeta lure him to the world of the Kais for another battle; although the Kais evacuate, they neglect to take Mr. Satan and Bee with them.
After Buu's latest transformation into a childlike body, Supreme Kai warns that this new form shows Buu at his most powerful; Goku and Vegeta use all of their strength trying to stop Buu from destroying Earth.
Goku and Vegeta fight their way through Buu's shifting insides with their friends in tow, managing to escape just in time to see Buu change into yet another form.
Despite absorbing Vegito, Buu can't manage to merge with him and gain his power; inside his body, Vegito splits back into Goku and Vegeta and the two Saiyans start freeing their absorbed friends, forcing Buu to regress to a less powerful form.
Buu tries to turn the tide in his fight with Vegito, luring him into range and transforming him into candy, but even that fails to stop the tenacious Saiyan from fighting with every ounce of strength.
Goku and Vegeta fuse, becoming Vegito, and take on Buu in an assault of powerful attacks that leaves the destroyer reeling -- until Buu manages to infiltrate Vegito's body and destroy him from within; King Kai trains Krillin and Yamcha.
Old Kai reveals critical info about how the Potara Earrings work only after Kibito and Supreme Kai use them to fuse; Goku arrives back on Earth and attempts to use Old Kai's earrings to fuse with Gohan, but his plan hits a snag.
Having absorbed Gotenks and Piccolo, Buu uses their unique moves against Gohan; Mr. Satan and Bee get caught in the line of fire; King Yemma agrees to return Vegeta to Earth to help stop Buu; Old Kai restores Goku's life and offers a special gift.
Buu demands a rematch with Gotenks, but it turns out to be a ruse to absorb him and Piccolo and grant Buu even greater power, allowing him to stand against Gohan's next assault.
The fighters watch in astonishment as a powered-up Gohan nearly beats Buu into submission, but a last-ditch move on Buu's part makes everyone scramble for safety; the fighters rendezvous with Mr. Satan and Dende.
Gotenks' energy expires at a critical point in his fight with Buu and he loses the upper hand; Gohan completes his training and departs for Earth.
Gotenks and Buu's intense fight decimates the Lookout; Gotenks manages to trap Buu after he begins attacking in ball form, but a "game" of volleyball between Gotenks and Piccolo proves ineffective in subduing the menace.
Despite Piccolo's destruction of the exit, Buu manages to break free from the Hyperbolic Time Chamber and targets the others on the Lookout; seeing no other way out of the chamber, Gotenks transforms into a Super Saiyan Level 3.
Gotenks and Buu fight inside the Hyperbolic Time Chamber as Piccolo looks on, ready to play his last trump card should Gotenks fail to defeat Buu.
Furious about the lives Buu took -- including their own parents -- Goten and Trunks put all their effort into training; Piccolo deliberately takes his time leading Evil Buu to the Hyperbolic Time Chamber, but Buu's tantrums make his task difficult.
Evil Buu eliminates nearly everyone on Earth, but spares Mr. Satan and a handful of others; Gohan must wait helplessly until he reaches full strength; Piccolo keeps Evil Buu occupied until Trunks and Goten finish their training.
Buu's good and evil halves fight each other, and the good Buu discovers most of his power now resides in his evil self; Piccolo sends Goten and Trunks into the Hyperbolic Time Chamber to train as a powered-up Evil Buu makes his way to the Lookout.
Mr. Satan intervenes before Buu can destroy the hunters and discovers that the dog survived being shot, but their happiness comes to an end after another encounter with the hunters triggers a terrible transformation in Buu.
Old Kai tells Gohan he must wait a further 20 hours before he can reach maximum power; Gohan and Trunks re-form Gotenks as a Super Saiyan fusion; Mr. Satan comes close to a breakthrough with Buu after Buu meets an injured dog, but tragedy strikes.
Goten and Trunks, in their fused form, Gotenks, unexpectedly struggle to withstand Buu's might; a nervous Mr. Satan lures Buu with some gifts to pacify him.
Goku asks Old Kai to help the fighters become stronger; Goten and Trunks' initial attempts at fusion yield unpredictable results.
Goku tracks down Gohan and helps him train in the Realm of the Kais, making a surprising discovery about the Z-Sword in the process; Buu's lust for destruction leads him to an unexpected encounter with a blind boy.
Goku shows Goten and Trunks his Super Saiyan 3 form before departing Earth; Buu builds a clay house out of his victims; Goku asks King Yemma about Gohan.
A now-directionless Buu wantonly destroys cities; Goku uses the last of his time on Earth to teach Goten and Trunks the Fusion Dance.
Goku fights Buu in his Super Saiyan 3 form while Trunks desperately searches Capsule Corp. for the Dragon Radar; Buu becomes sick of following Babidi's orders and takes matters into his own hands.
Goku sends Trunks to Capsule Corp. to grab the Dragon Radar while he stalls Buu and Babidi by transforming into an even more powerful form of Super Saiyan than the warriors have seen before.
Gohan must master the Z-Sword; after Buu destroys another city, Trunks and Goten attempt to stall him by promising a fight once they finish their fusion training; Babidi sets his sights on Capsule Corp.
Babidi, seeking Piccolo, Goten and Trunks, issues a worldwide ultimatum; Supreme Kai and Kibito tell Gohan about the legendary Z-Sword -- possibly the only thing capable of destroying Buu for good; Goku teaches Goten and Trunks the fusion technique.
Shenron grants Bulma's wish to revive everyone Vegeta killed at the tournament, but Goku asks her not to make the other two wishes; a restored Kibito and Supreme Kai find the unconscious Gohan and take him to the world of the Kais.
Hoping to bring the victims of Vegeta's battle with Goku back to life, Bulma and others fly across the world to collect the Dragon Balls; Goku joins Piccolo and Dende at the Lookout, where Goku reveals a new technique that may help against Buu.
Piccolo finds Buu ripped to pieces by Vegeta's sacrificial attack, but to his horror, Buu manages to regenerate himself and heals the crippled Babidi; a revived Goku assesses the situation; Supreme Kai looks for Gohan, who remains unconscious.
Piccolo confronts Babidi as Trunks and Goten race to help a struggling Vegeta, but Buu continues to dominate the battle; desperate to stop Buu at any cost, Vegeta unleashes his most devastating attack.
Vegeta arrives to fight Buu and the two exchange explosive attacks; despite blasting a hole right through Buu, Vegeta watches the hotheaded menace regenerate himself.
Supreme Kai and Gohan fight a losing battle against Buu's overwhelming power, and when Dabura steps in at the last minute, Buu reveals a shocking new power against him.
The childish attitude of newly formed Majin Buu confounds fighters on both sides, but his power becomes frighteningly apparent when he dispatches Dabura without even trying; Vegeta abandons Goku to fight the new menace on his own.
Vegeta admits he allowed Babidi to influence him so he could gain enough power to take on Goku; Gohan makes a last-ditch effort to destroy Buu's egg as it hatches.
Goku fights a hate-filled Vegeta while Gohan and Supreme Kai desperately race to prevent Buu's egg from hatching.
When Goku learns about Vegeta's ambitions, he agrees to a fight, but insists they take the battle away from the crowd of innocent bystanders.
Despite his superior strength, Gohan struggles against Dabura's attacks; Dabura turns his attention to Vegeta when he realizes how much evil he possesses and Babidi uses his magic to bring the Saiyan over to their side.
Android 18 offers to throw her fight against a hopelessly outmatched Mr. Satan if he agrees to pay her double the prize money; Goten and Trunks fly off to investigate the spaceship; Gohan and Dabura begin their battle.
Number 18 gives her all at the World Martial Arts Tournament, but cannot read Mighty Mask's sporadic movements; Dabura completes his time in the meditation chamber as Babidi anticipates his warrior's upcoming fight with Gohan.
Goku and the others join the Supreme Kai in his search for Yamu and Spopovitch; Shin explains what the devious duo were after and warns them of an ancient evil known as Majin Buu.
Goku returns with the senzu beans for Videl; Gohan begins his match with Kibito, but gets more than he bargained for when Spopovitch and his partner intervene.
Spopovitch continues his savage assault on Videl who refuses to admit defeat.
The Great Saiyaman accidentally reveals his true identity to Videl while rescuing an old playmate from a greedy circus manager.