SSJ Vegeta's Realm Of Power
The Buu Saga
Seven Years passed since the cell game. Krillin marries Android 18 and has a daughter named Marron. Chi-Chi has a second son named Goten. Gohan has a girl friend named Videl, she's the daughter of satan( he claims to have defeated Cell this got him alot of fame), Gohan is also a super hero named the Great Saiyan Man. During the Tenkaichu-Boudoukai, Goku is granted a single day of life to with the Z warriors. Two of Buu's slaves steal gohans energy, then a man named Kaiosen revives Gohan, he then tells of a evil demon named Buu trying to destroy Earth. If Buu's slaves gather enough energy, he will be revived. Vegeta learning that he can become stronger by turning into Buu's slave, Vegeta turns evil again, this time turning into Majin Vegeta and can turn into SSJ2. This gives Buu enough energy to be revived, Goku learns of this and turns SSJ2. He fights Vegeta nad tells him that good always overcomes evil, Vegeta realizes this and decides to self destruct in hopes to kill Buu.
Goku then heads to battle against Buu, he then turns SSJ3, but he still can't defeat Buu. Later Gohan heads up to the Kaoiu-sin's planet for training, before Goku's time is up on earth he teaches Goten and Trunks the fusion technique, then they get trained by Piccolo to become strong enough to defeat Buu. Soon after Goten and Trunks fuse their combined power turns SSJ1, and then SSJ3! But Buu has made a twin of hiimself, but he's alot more evil than Buu, he even absorbed Buu turning himself into Super Buu. Gotenks is defeating Super Buu, but Gotenks is an inexperienced and careless fighter. Buu absorbs Gotenks and becomes alot stronger, then he absorbs Piccolo. Dai Kaoiusin then sacrafices himself so that Goku can live.
Goku then get a pair of Potara earrings for fusion, this way the fussed person won't diffuse after 30 min. Gonku now alive teleports to the battle, while that is going on King Yma grants Vegeta life to fight Buu. When Goku arrives he tells Gohan to fuse with him and throughs him an earring but Gohan drops it and while distracted Buu absorbs him, turining himself into the Ultimate Buu. Vegeta then fuses with Goku to become Vegetto. Vegetto defeats Buu but on purpose allows Buu to absorb them so they can save their friends. This somehow wears off the permanate fusion. They rescue Goten, Trunks,Gohan, Piccolo and Fat Buu through Ultimate Buu's pores. All of the energy that Buu has taken restores him back to his normal form, Majin Buu. Then he destroys the Earth. Kaoiu-sin teleports to help Goku teleport Vegeta,Satan,his dog, and Dende to Kaoiu-sin's planet.
Vegeta then gets angry because he rescude them instead of his son and the rest of the Z fighters, Goku was speechless. But there wasn't anytime for that, Majin Buu also teleports to the planet Gokus on, and start to fight. Then Goku starts to get beaten up badly. Vegeta jumps into battle so that Goku can create a Genki-Dami( Energy given by the Nameks, the people in the heavens, and everyone on Earth). The Nameks Dragon Balls are used to bring Back the Earth and everyone killed by Buu, the third wish was saved for later. Son Goku throws the Genki-Dami but because he was so weak Buu was able to counter it and Pushes it back to goku. Vegeta then tells Dende to wish all of Goku's energy back. now a fully restored Goku throws back the Genki-Dami and buu is no longer able to counter it and is killed. Ten years after the battle with Majin Buu, Fat Buu is revived into a good form called Uboo. Goku decides to rain him since he has great potential. Gohan and Videl get married and have a daughter named Pan.
This ends Dragon Ball Z, but don't worry DragonBall GT is next, the first episode in that will be the Bebi Era