Ten years have passed since Goku left his friends and family to hone his skills. But Goku soon finds himself helpless against the mystical power of the Dragon Balls and an accidental wish made by the devious Emperor Pilaf. His desire; that Goku once again become a child! Not daunted by this small setback, Goku, together with Trunks, and his own granddaughter Pan, blast off into the outer reaches of space in search of the mysterious Blackstar Dragon Balls. But these Dragon Balls have a fatal secret: if not collected within one year Earth will be destroyed.
After decades of persistence, Emperor Pilaf finally steals the dragon balls and summons Shenron! But Pilaf slips up yet again and wishes Goku back to childhood size!. As Goku tries to present his new self to his family, King Kai reveals alarming news. If the dragon balls aren't returned to Earth within one year, the entire planet will explode!
While Bulma, Videl, and Gohan prepare a ship that will be used to gather the Black Star Dragon Balls from space, Pan becomes upset at how the others view her as a child. In the meantime, Goku is kidnapped by two men seeking to gain a ransom from a not-so-worried Bulma and Vegeta.
After suffering damage to their spaceship, Goku, Trunks, and Pan are forced to crash land on Planet Imecka. The trio is enamored by the festive atmosphere of the city until they realize that the Imeckians are money-hungry swindlers. At first the travelers from Earth are trying to escape with their wallets, but it soon becomes clear that they'll be lucky to escape with their lives!
After finding themselves as public enemy number one on the merchant planet, Imecka, Goku, Pan, and Trunks attempt a daring rescue mission to salvage their ship. Without it they may be stuck on the planet forever! Casting all fear aside, the Saiyans try a direct approach...and find Don Kee's army locked and loaded!
While hiding from the authorities, Goku, Pan, and Trunks become moved by the injustices that the Imeckans suffer under the oppressive Don Kee. They decide to confront The Don, and head straight for a showdown at the Royal Palace. It seems like an easy victory until Lezick appears from the shadows!
Barely escaping Imecka with their lives, Goku, Trunks, and Pan land on a planet where everything is larger than life. As they near the dragon ball their good fortune takes a turn for the worse as a giant nearly consumes the ball and dooms Earth forever! Goku must make a quick decision before having to charge into the belly of the beast...literally!
The Saiyans arrive on a peaceful plant with one very large problem. The monster Zoonama has the incredible ability to produce earthquakes by merely shaking his gigantic whiskers! Now the monster is demanding a bride. If the villagers don't comply their very survival cannot be guaranteed!
Not bowing to the demands of the wicked Zoonama, Trunks reluctantly poses as Zoonama's bride in an attempt to sneak deep into the monster's lair under a volcano and free the people of the village forever. But things get hot as Zoonama reveals a secret and the volcano prepares to blow!
After seemingly securing a dragon ball, three mysterious strangers steal what the Saiyans worked so hard to attain. In their haste to track down the thieves, Goku, Pan, and Trunks find themselves tricked into touching down on a dangerous asteroid. Meanwhile the three strangers present the spoils to their bizarre leader! Just who is this mystery man...and what makes him so dangerous?
Finding themselves on the cave-ridden planet of Beehey, Goku, Trunks and Pan have run straight into a pack of Mouma, a giant buglike species with a taste for humans! Hiding in the shadows are the Para Bara Brothers, planning out the perfect time to attack with their unique style of dancing.
Pan and Giru are stuck on the Para Para Brothers spaceship heading straight for Cardinal Mutchy Mutchy and his demented regime. Meanwhile, Goku and Trunks pursue Pan to the planet. Can anything prepare them for the shock that is to come?
While Pan is under the control of the psychotic Master Dolltaki, Goku and Trunks battle with the vengeful Cardinal Mutchy Mutchy, who can manipulate inanimate objects to attack at will! Meanwhile, Dolltaki has big plans for his faithful believers, as the mighty Lord Luud moves one step closer to being resurrected.
Goku and Trunks have defeated Cardinal Mutchy Mutchy, and now stand before the awakening Luud. When Dolltaki refuses to give up Pan to the ever-growing monster, Dr. Myuu feeds both Pan and Dolltaki to Luud! This sacrifice brings the machine-mutant so close to full operating power that Goku and Trunks alone will be no match for it!
Determined not to just sit around inside the Luud monster, Pan and the Para Para Brothers force Dolltaki to reveal the secret to escaping their mechanical prison. Meanwhile, Goku does his best to fend off the ever growing monster. There just might be a way to free the imprisoned innocents, but is there enough time?
Trunks and Goku consider returning to Earth so that Pan can be placed out of harms way and Goten can continue the journey as originally planned. But Giru discovers a dragon ball and leads the group to a desert planet where they must ward off menacing monsters and scour the vast sand dunes for the hidden dragon ball. Will they succeed, or will they become nothing but scattered feed for giant centipedes?
Giru convinces the Z warriors to land on Planet M2, his home planet. It is a trap though and Giru is greeted by General Rildo and is told he has done a good job of luring the humans to the planet. At the end of the episode the Z warriors meet up with a group of strong robots who call themselves M2's commandoes. After a short fight the robots capture Trunks and Goku and take them away.