Goku and Vegeta cut down their four friends, and as they do, Super Buu regresses to his earlier form. Dende and Hercule continue to follow Buu. Back inside Majin Buu, Goku and Vegeta also find the original Majin Buu. They read his thoughts to find out what happened to him. Suddenly, a thought form of Buu himself appears. The two join forces to defeat it, but once they do, another one appears. They realize that this is a battle they can’t win. Buu finally decides that he’s had enough, and he tries to absorb Goku and Vegeta.
Goku and Uub begin to fight, and it’s clear that Uub doesn’t know much about fighting. But as the match goes on, he learns more and more, and is able to go toe to toe with Goku. Uub nearly falls out of the ring, but Goku saves him from hitting the ground. He realizes that Uub doesn’t even know how to fly, so he decides to live with Uub in his village and train him. Despite his friends and family pleading with him to stay, he flys away with Uub. Goku is training Uub to defend the earth when he’s gone. He hopes one day, when Uub’s training is complete, to have a real all-out match with him to test their power.
The seeding draw for the tournament begins, and Goku has Majin Buu use his magic to rig it so that he faces the powerful mystery fighter he had talked about. In the first match, Pan faces Wild Tiger, and the four-year-old easily dispatches with him. Next up is Goku vs. Uub. Uub is the reincarnation of Buu. King Yemma apparently heard Goku’s wish right before Buu was destroyed, and he reincarnated Buu as a good person, named Uub. Uub is apprehensive, so to bait him into fighting, Goku resorts to taunting the young boy. After a particularly nasty insult and a kick to the face, Uub has snapped, and is now ready to fight.
Ten years have passed, and Goku is training with Goten when Bulma and Vegeta show up. Goku says that he and Goten will be entering the World Martial Arts Tournament, so Vegeta says that he and Trunks will do the same. The day of the tournament comes, and old friends catch up. Everyone has arrived to watch. Gohan, who is now married to Videl, has decided not to enter, but his daughter, Pan, will fight. Since there is no junior division, she will be fighting with the adults. Hercule and Buu will be fighting, however, and Goku says that there is someone who is 100% human that can threaten to beat Goku and Vegeta.
Bulma has invited everyone to a barbecue at Capsule Corporation, and Goku’s family is ready to leave. The only problem is that Goku is nowhere to be found. Frustrated, Chi Chi and the boys leave without him. While everyone’s having a good time at the party, Goku is out on a mountaintop, looking after some eggs that are ready to hatch. He protects them from the storm and from predators. After they hatch, he finally arrives at the party, to the delight of everyone.
The Supreme Kai brings Dende back to the world of the Kais. Dende heals Vegeta and Goku. Hercule finds the body of old Buu, and asks Dende to heal him. Vegeta won’t let him, and plans to destroy him. He says it is too dangerous for any form of Majin Buu to exist, but Hercule continues to plead with him. Goku takes Hercule’s side, explaining to Vegeta that it was old Buu who saved Vegeta’s life right before Goku threw the Spirit Bomb. Vegeta reluctantly agrees, and Majin Buu is healed. Supreme Kai takes them all back to Dende’s lookout, where they reunite with friends and family. Goku tells his family that Elder Kai gave him his life, so he can stay on earth for good. Four months later, they use their remaining wish with Shenron, asking him to erase the memory of Majin Buu from the mind of everyone on earth, so that the good Buu can assimilate into society. Life finally returns to normal on earth.
Goku is ready to throw the Spirit Bomb, but Vegeta is in the way, and, despite Vegeta’s pleas otherwise, he refuses to take out Vegeta along with Buu. Suddenly, old Buu gets up and holds Kid Buu down long enough for Hercule to pull Vegeta to safety. Old Buu is kicked aside, and Goku throws the Spirit Bomb. It hits Kid Buu, but he starts pushing it back. Goku uses all of the energy he has trying to push it back into Kid Buu, but Buu is too powerful. Vegeta suddenly remembers that they still have a third wish with Porunga. He instructs Dende to wish for Goku’s power to be normal again. The wish is granted, and Goku is able to force the Spirit Bomb back at Majin Buu. As he does so, he silently wishes that Buu had been a better person, and hopes to fight him some day in the future. The Spirit Bomb hits with full force, driving Buu into the ground. Majin Buu is finally dead.
Vegeta continues to plead with the people of earth, but no one will listen to him. Old Buu has finally lost all of his energy, so Vegeta is forced to fight Kid Buu. He is no match for him, and gets pounded. Now Goku asks the earthlings to raise up their arms, and small pockets of people who recognize his voice do so, but the vast majority remain uninterested. Piccolo, Gohan, Goten, and Trunks spread out into the city, hoping to convince people to raise their arms. Hercule has finally had enough, and he speaks to the people of earth. When they hear the familiar voice of the World Champion, all of the people of earth raise their arms and offer their energy. The Spirit Bomb is finally ready.
The people of earth come back to life, including the Z Fighters and their friends. Goku gets into position to create the Spirit Bomb, and with the help of King Kai, Vegeta speaks to the entire population of earth. He tells them what’s going on, and that do defeat Buu, they need to raise their hands up and offer their energy. Only Goku and Vegeta’s family and friends comply. No one else is willing to listen to a mysterious voice from the sky. Vegeta repeatedly pleads with the earthlings, but to no avail. While this is going on, old Buu is buying them time by fighting Kid Buu, but it’s not going well. Goku hasn’t gathered nearly enough energy to destroy Buu.
The old Buu is no match for Kid Buu, who begins to wail on him. Hercule continues to try to help the old Buu, but is ineffective. Vegeta suddenly comes up with a plan. He communicates with Dende, telling him to go to the new planet Namek and gather the Dragon Balls. The Supreme Kai and the Elder Kai take him there, and the Namekians are waiting with the seven balls. Porunga is summoned, and Vegeta tells Dende his two wishes: bring back the earth and restore it to its original state, and bring back all of the non-evil people that died since the morning of the World Martial Arts Tournament. These wishes are granted, and even Vegeta himself comes back to life. He finally reveals the main part of his plan to destroy Buu: the Spirit Bomb.
Buu is about to blast Vegeta, when suddenly Hercule starts to taunt him. Buu lets Vegeta go, and turns his attention to Hercule. The world champ, thinking that it’s all a dream, tries to destroy Buu, but is obviously ineffective. Buu winds up to punch him, but suddenly stops. He wrestles with his mind for a moment, and then spits out the fat form of Buu, who, though not part of his physical being, was still inside of Kid Buu. Hercule tries to beat up Buu again, but fails. Buu sends a blast toward Hercule, but it is knocked away by the old Buu, who has regained consciousness. Meanwhile, Goku still can’t gather enough energy. He starts losing energy, and falls to the ground in his normal form.
Goku continues to fight Buu, and he seems to have the upper hand. He deals out a lot of damage to Buu, but as the fight goes on, his hits become weaker and weaker until they have no effect at all. He tells Vegeta that it’s his turn, but Vegeta declines, citing that he is no match for Buu. He tells Goku that he’s better than him. Goku says that he nees one minute to power up enough to destroy Buu. While Goku is powering up, Vegeta steps in, knowing that if he dies again, he will no longer exist in any form. Buu thrashes Vegeta, but every time he gets knocked down, he gets up, ready for more. Buu stretches out his arm, wraps it around Vegeta’s neck, and begins choking him. It’s been more than one minute, but Goku still has not generated enough power.
Goku and Buu continue to fight, each taking powerful blows from each other. Buu tries his ball trick again, and hits Goku hard. Goku puts all of his energy into a massive Kamehameha, but Buu just reforms afterward. Goku powers down to his normal state and collapses. Vegeta steps in, but he is no match for Buu. Buu cleans his clock, and just as he’s about to give Vegeta his finishing blow, Goku pushes him out of the way. He then powers back up to Super Saiyan 3 and continues their furious fight. Vegeta reminisces about all of the fights he and Goku were in. He finally admits that Goku is his better.
The Supreme Kai transports himself, Dende, and the Elder Kai to a distant planet so they will be out of Goku and Vegeta’s way. Unfortunately, they forget to take Hercule and Bee along. Goku and Vegeta play janken to decide who will fight first, and Goku wins. He powers up, and starts beating on Buu. He blasts him apart, but he reforms. Buu creates another massive energy ball and throws it down at the planet. Goku is able to deflect it, but Buu guides the ball back around and into the planet. Powerful earthquakes rock the surface of the planet, leaving the ground ragged and uneven. Goku decides to power up to Super Saiyan 3.
Buu reforms after the destruction of the earth, and goes on a rampage throughout the galaxy. He goes from planet to planet, looking for Goku and Vegeta, and then destroys the place when he doesn’t find them. He goes to the Grand Kai’s planet, and starts to destroy everyone there. Supreme Kai offers Goku and Vegeta his fusion earrings, but they both refuse them. They raise their power levels so Buu will know where to find them. Buu appears on the world of the Kais.
Supreme Kai explains to the Elder Kai that there were once five Supreme Kais. Four of them ruled over a quadrant of the universe, and the fifth was their leader. He says that Kid Buu was his original form. North and West Kai perished against Majin Buu. South Kai was absorbed. The leader, Dai Kaio, was also absorbed, but this absorption changed Buu into the fat, happy Buu that came out of the ball. The absorption of the Kais weakened Buu. Back on earth, Kid Buu creates a massive ball of energy and throws it at the earth. Goku and Vegeta try to grab their sons and Piccolo, but are only able to grab Dende and Hercule. Goku Instantly Transmits to the world of the Kais.
Goku saves Vegeta from being absorbed. As Vegeta recovers, Goku continues to fight the thought form of Buu. Goku is rapidly losing energy, and just as Buu is about to destroy him, Vegeta cuts down the pod containing the original Majin Buu. This causes Buu to go mad, and so Goku and Vegeta grab the four pods and try to make their escape. On their way through is body, they notice one of the tunnels that leads to one of the holes in Buu’s body where the steam escapes. They are able to fly out through here, and when they emerge on the other side, all six of them regain their normal size. As Goku and Vegeta set the pods down, they notice Buu undergoing a change. He shrinks into Kid buu.
Goku and Vegeta cut down their four friends, and as they do, Super Buu regresses to his earlier form. Dende and Hercule continue to follow Buu. Back inside Majin Buu, Goku and Vegeta also find the original Majin Buu. They read his thoughts to find out what happened to him. Suddenly, a thought form of Buu himself appears. The two join forces to defeat it, but once they do, another one appears. They realize that this is a battle they can’t win. Buu finally decides that he’s had enough, and he tries to absorb Goku and Vegeta.
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