Ten years have passed since the end of DBZ. Goten, Gohan, and Trunks are grown up and living out thier daily lives in the big city. Gohan is married to Videl, Hercule's daughter,and they have a daughter of their own, Pan. Early in the series, Goku is training with Uub while Mr.Popo and Dende watch nervoulsy as Goku and Uub cause tremendous damage to the tower. After stopping for a few minutes,Goku walks around the tower to notice that Emperor Pilaf has grabbed the ultimate dragonballs that were in an urn and called the dragon. The ultimate dragonballs, also known as the black star dragonballs,were created by Kame before he was purified. Emperor Pilaf is outraged to see how big Goku has gotten and belives he's here to stop him from making his wish again. Pilaf orders Shuu and Mai to shoot the robot missles, which were easily caught by Goku. Pilaf, blinded by rage, insanely wishes that Goku was smaller so he would be easier to defeat. The dragon says "So be it", turning Goku into a child again. After the wish is granted, the dragonballs are scatterd across the universe. Dende and Mr.Popo are confused as they come across a child Goku. Kaiou says the only way to reverse the wish is by gathering the black dragonballs and by keeping the world from blowing up. Goku meets up with his friends back at the crib, which ticks off Chi-Chi, who feels they're plaing a cheap trick on her. (She belives this because Goku looks much younger than her.) As the Z team fixes up the space ship taht Bulma built, Pan is mad that she can't go with Goku to help him find the balls. She kicks the ship, putting a dent in it, but covers the dent with a cart. She flies off with Goku following closley behind her but escapes him two thugs kidnap Goku. The two thugs try all day to call in their randsom but have no luck. They are later scared when Goku brings them a phone booth. The next day, Goku and Trunks climb aboard the space ship as Gohan finishes his phone call outside the ship. Pan waits for Goku and Trunks to enter the ship so she can blast off without getting kicked out the ship. This begins Goku and his team's search for the ultimate dragon balls. They travel across the galaxy coming across many enemies and making friends. One of their new friends is a little robot named Gill, who ate their dragon radar for energy. Trunks tells Gill to come with them since he will act as a large dragon radar. It gives them advance warnings of upcoming dangers and adds a comic affect to the story. The trio arrives home with all seven black dragon balls, happy to be home with their loved ones. Goku gives Dende the balls so he can make the wish to save the world, but Dende has a smirk on his face. Little does Goku know that the Dende or anyone else, for that matter isn't feeling like himself. Baby, an enemy whom Goku and his friends came across in the galaxy, has made his way to Earth and planted eggs inside everyone so they can become his slave. Goku, unable to contain SSJ3 form for long in hi child form, loses the first battle with Baby. He goes under training to learn to hold his form longer. After his training is completed, he is teleported to the new planet Plant. Which Baby has created to look like the old Planet Plant. Goku and Baby Vegeta fight, with Goku losing. Goku is so outraged that he can't save the Earth that he transforms to a Golden Oozaru and starts trashing everything. Pan flies in front of Goku and begs for him to stop. Goku looks up at the Earth again and a golden yellow glow engulfs his body as lightning shoots across the sky. The cliff that Goku was on crumbles underneath his feet and when the dust rest, Goku has transformed into his SSJ4 alter-ego, with long black hair and an ape-like body with a dust-red coat. Pan wishes for Goku to defeat Baby Vegeta, and Goku says he should have the power to stop him. Goku and Baby Vegeta fight. Baby Vegeta is about to lose until Bulma steps in to save her husband by transforming him into the Golden Oozaru. Baby goes crazy in his new form, destroying his own city and planet. Kaiou, one of Goku's traning partner, teleports to Dende's palace to get some water that will cure all evil in a person's body. He then teleports back to planet Plant to transform all of Baby's slaves back to their normal selves. SSJ4 Goku finally defeats Baby when Baby tries to escape in a space ship, which Goku destroys with a Kamehameha blast. The whole World is turned back to normal when Kaiou sprinkles the water on the Earth, removing the Baby's egg and control over them. The Earth is about to be blown up, leaving SSJ4 Goku and Kaiou teleporting people and animals to Plant. They're able to get everyone on the planet when Goku realizes there is one last person on the planet. Piccolo contacts Gohan to let him know he's going to stay on the planet and die when it blows, preventing the black dragon balls from ever being used again. (As long as Piccolo is alive, anyone can use the dragon balls.) Piccolo says goodbye to Gohan as the planet blows up. After Dende's dragon balls are able to be used again, Dende wishes for the Earth to be restored and for all the people to return to Earth. The next fighting tournament begins with Goku in the kid's competition and Pan in the Adults. Goku is defeated when a kid accidentally bumps into him while he's talking, then he's tickled to the point where he falls out of bounds. Pan, having more luck than Goku, defeats her opponents with little difficulty. She then pulls herself out of the competition when an announcer asks her how she would feel about taking over her father's position. With fear of herself looking like Mr.Satan, she pulls herself out of the competition. The final round is between Uub and Mr.Satan. Uub is about to finish Mr.Satan off when he realizes that Mr.Satan is the Earth's hero and if he defeats him, all of the world will look down on Mr.Satan. Uub lets Mr.Satan punch him out the ring, allowing him to win. Mr.Satan is awarded ''the strongest person on Earth'' title once again. Dr.Gero another evil scientist seeking revenge on Goku combine powers to create the perfect warrior. They build another Android 17 so the two can merge together and become Super 17. Goku fights Cell and Frieza, who both think they've become strong enough to defeat Goku. But Goku beats them without breaking a sweat. Meanwhile, back on Earth, Android 17 kills both Krillin and Android 18 when 18 refuses to join him in conquering the world. Android 18 crawls to her dead husband and holds his hand and she dies in the street with him. The two 17's merge to become Super 17, which both Vegeta and Gohan cannot stop. Goku wishes to go back to Earth but is not able to return for a reason that we're unclear of at first. He finally returnes to Earth saying he had to because the food was so bad down there. Goku fights 17 until he kills him with a Kamehameha blast, which pierces 17's chest. Once again the fight is over, the Z team gathers the dragonballs to wish all those back to life who were killed by 17. The dragon balls failed for once, as they crack and spew blue smoke. Another dragon comes out of the dragon balls, telling the people he does not care about the wishes and creates seven dragons, each with a dragon ball. Kaiou mentions that each time they make a wish, evil is brought back to the ball and causes the ball to crack like it did this time. Kaiou says that if Bulma had never created the dragon radar, this would have never happened. But bulma insists that she couldn't do it all on her and that goku helped her. Goku, thinking he had a part on this, tells them he has to do what he has to do. Goku then takes off to defeat each of the dragons. He flies across the world, defeating each dragon as he goes along. Vegeta, still disappointed that he's unable to turn SSJ4, has Bulma build a device that will allow him to advance to this form. Goku encounters the final dragon, Li Shenlon, who absored all the dragon balls to become perfect. Goku, unable to defeat Li Shenlon on his home turf, sees Vegeta coming and wonders what he's doing here. Bulma fires a ray at Vegeta that transformes him into SSJ4. Goku and Vegeta use the fusion technique to turn into Gogeta SSJ4 the ultimate fighter in the series. Gogeta can only stay in this form for 20 minutes before turning back into Goku and Vegeta. Amazingly, Li Shenlon holds off Gogeta long enough to return Goku and Vegeta to their normal form. Pan and the rest of the spectators are hold to leave for their own saftey. Goku, back as a kid again, powers up for his Spirit Bomb attack. He asks all his new friends to search for the dragon balls to help him to defeat this dragon before it destroys the whole galaxy. Goku gets the energy needed to complete the Spirit Bomb and destroys the evil dragon. With that, the dragon balls return to normal, and the wish granting dragon returns and says there will be no more wishes for 100 years. Goku cuts a deal with the dragon to make one more wish: for everything to be like it was before the dragons destroyed the Earth. The condition is that Goku must give his own life. The dragon grants it and tells Goku to hop on his back. Goku wishes everyone goodbye as only Vegeta and Pan understand what he's about to do. Goku flies over Tenshinhan and Chau-zu, while Yamcha fixes hi car. He stops by the home for internal losers and thanks Piccolo for everthing and wishes him goodbye with a powerful handshake. Goku stops by Master Roshi's island to duel with Krillin one last time. After Krillin gets one good hit in, Goku vanishes back to Shenlon and falls asleep on top of his head. All seven dragon balls circle around Goku as they are absorbed into his body. The four star ball, belived to have his grandfathers spirit, circles Goku's head and is absorbed into his forhead. One hundred years have passed since Goku traded his life for the world. Goku Jr. and Vegeta Jr. are competing in the fighting tournament as Pan, old but still full of spirit, watshes her grandson battle. As she looks at the bottom row, Goku is sitting there watching the two fighters struggle with all their heart. Pan tries to say hello to her grandfather, but he vanishes before she can reach him. As GT closes, Goku walks out of the arena as a young adult, smiling at what he has seen.