
Five years after defeating Piccolo at the World Martial Arts Tournament, Goku introduces his young son Gohan to his closest friends. Their peaceful reunion is shattered when a mysterious armored warrior arrives on Earth, targeting powerful fighters.
Half a decade of calm has settled over the Earth since Goku's climactic showdown with Piccolo at the 23rd World Martial Arts Tournament. In the years that followed, Goku married Chi-Chi and became a father to a boy named Gohan, honoring the grandfather who raised him. Life has been quiet, and this particular day brings the promise of a warm reunion at the Kame House, where old friends eagerly wait to meet Goku's son for the first time.
Elsewhere, the peace is already fracturing. A space pod crashes into the countryside, and from within emerges a battle-hardened warrior clad in alien armor. Equipped with a device called a scouter, which measures the energy of living beings, the stranger locks onto the nearest strong power signature. That reading belongs to Piccolo, who finds himself confronted by a fighter of terrifying strength. The encounter is brief; the warrior quickly dismisses Piccolo as unworthy and departs, tracking a second, more impressive reading.
At the Kame House, Goku's reunion with Master Roshi, Krillin, and Bulma is proceeding warmly when the armored stranger descends from the sky. His words send a chill through the group, as he addresses Goku with a familiarity that makes no sense to anyone present.
The episode opens with a dramatic prologue that establishes the broader mythology at play. Through flashback, viewers witness the destruction of Planet Vegeta at the hands of the tyrant Frieza, wiping out nearly the entire Saiyan race. A lone infant is launched toward Earth in a small pod just before the planet's annihilation, setting up the origin story that fans of the original Dragon Ball series already know well.
This prologue serves as both a refresher and a statement of intent for Kai's streamlined retelling. By compressing the early material and cutting directly to the heart of the narrative, the episode wastes no time pulling viewers toward the central conflict that will define the series going forward.
As the first episode of Dragon Ball Z Kai, this installment carries the unique responsibility of reintroducing a beloved story to both new and returning audiences. The remastered animation is immediately apparent, with the destruction of Planet Vegeta receiving entirely new footage that showcases the visual upgrade. Filler scenes from the original Dragon Ball Z have been trimmed, keeping the narrative focused and the pacing brisk.
The episode ends at roughly the halfway point of the original DBZ premiere, a deliberate choice that gives each story beat more room to breathe within its tighter framework.

Akira Toriyama's last Dragon Ball movie arrives on Hulu April 13 in both sub and dub, bringing Gohan and Piccolo's critically acclaimed adventure to a wider audience ahead of the franchise's biggest year....

Reports indicate that Dragon Ball Super: Beerus has wrapped production well ahead of its Fall 2026 debut, a welcome contrast to the rushed early days of the original Dragon Ball Super anime....

Christopher Sabat has voiced Vegeta for more than 25 years, but the physical toll of Dragon Ball's intense voice work has him openly discussing the possibility of stepping away....
Looking for more on Prologue to Battle! The Return of Goku!? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the Dragon Ball anime series, manga, and official materials. Episode and chapter references are cited where applicable.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
Browse our episode guides:
Official resources:
Come listen to some Dragon Ball R&B.
Daddy Jim Headquarters maintains this encyclopedia across 13 languages. If you spot an error, a translation issue, or something that doesn't look right, let us know.