Dragonball Xz: The Legend of the Red Star Dragonballs is the 1st movie in Dragonball Xz. It takes place immediately after the dark TRUNKS Saga and is the canonical follow-up to the story. It aired on tv as a 3 part episode, editted together into a full length movie which was released immedaitely after the 3rd and final episode of the mobie.
Goku is in a coma from using the Enraged Saiyan form in his battle against dark TRUNKS. Vegeta, Trunks, Gohan, Goten, and Piccolo travel across the universe in search of the legendary Red Star Dragonballs, the only Dragonballs in the entire universe capable of wishing Goku back. On their journey, they encounter various creatures across various planets, as well as encounter old foes.
Moori unearths a prophecy stating the existence of the Red Star Dragonballs, creating by the supposed progenitor of their race, the Original Namekian. Within the ruins containing the prophecy, rested one of the 7 mystical Red Star Dragonballs. They were real. Piccolo somehow returns, and as a Namekian, he is able to hone in on their location like a Dragon Radar unlike any Dragonball before these. Oolong tags along, too.
The second one was found within a dying red giant, the third on a harsh snowy planet, and the fourth on a lush jungle planet. Upon reaching the sandy wasteland planet that contained the fifth, they encounter their old foe from Namek, Jeice. It turns out that there wasn't just once Jeice. There were two. And because of that, he was able to survive Vegeta's rampage through the Ginyu Force. It turns out he was behind the entire Frieza incident as well. After Trunks is able to call upon unknown powers to defeat Jeice and his doppelganger in a gripping battle, a new evil is revealed.
Oolong is found to be sabotaging the Z-Fighters as they approach the sixth one, they land on a barren lifeless rock in space. Within the caves, they find Android 18, but things aren't as they seem. She controls the minds of the 4 Saiyans with Piccolo the only one immune to it's power. It is about to be over for the gang, but Oolong appears. Turns out he's the one behind everything as a final fight for the ages happen for the penultimate Red Star Dragonball.
Finally, they approach the place where the Original Namekian lays in solitude. With him is the final Dragonball, the tragic origin of the Namekians and their most hated enemy, and the single most important and powerful wish in the universe. They return to Earth after their journey, where Goku waits for them.
Characters introduced will be in intalics. Characters entirely new to the series will be bolded.