Gohan and Goten, both having been possessed by Baby, fight Vegeta, who is returning home after shopping with Bulla. Bulma, Videl, and Chi-Chi worry about Goten. Baby reveals his history. Goku, Trunks, and Pan find the last dragon ball on a snow-covered planet.
Baby-Vegeta uses the black star dragon balls to wish back Planet Vegeta into Earth's orbit. Pan mourns Goku; Goku, somehow not dead from Baby-Vegeta's blast, is trapped in an alternate dimension, and he plays a game with Sugoro, the dimension's ruler, for his life.
When Goku realizes that Sugoro is cheating, he must escape the dimension before the dimension's caretakers, who aren't pleased that Sugoro has been cheating all this time, destroy it. Also, Majin Buu, Pan, and Mr. Satan sneak onto a ship bound for planet Vegeta, and Kibito Kai and Old Kai agree to train Goku for his battle with Baby.
Start of the "Super 17 Saga". It is time again for the World Martial Arts Tournament. Goku, still in child form, fights in the Jr. Division, while Majuub (disguised as "Papaya Man") and Pan fight in the adult bracket. Also, Mr. Satan announces that he will retire from fighting after this year's tournament, Trunks announces his retirement as President of Capsule Corporation, and Vegeta attempts to enter the tournament late.
Dr. Gero and Dr. Myuu join forces in hell to take their revenge on Goku. Using two versions of Android 17, one in hell and one on Earth, they create an opening between the two dimensions. As old enemies return to terrorize the world again, Goku realizes that he must travel to hell to stop the evil doctors.
In hell, Goku continues to fight Cell and Frieza. On Earth, Android 18 fights Android 17 and Gohan continues fighting General Rilldo. Later, Vegeta, Majuub, Trunks, Gohan, and Goten all fight Super Android 17.
Start of the "Shadow Dragon Saga". When the Z Fighters attempt to summon Shenron by using the cracked dragon balls, the shadow dragons, created from the negative energy formed from all of the previous wishes, escape. Once this is explained to them by the Kais, Goku goes after the dragons to stop them from destroying the Earth.