
Goten and Trunks accidentally stow away in Monaka's delivery truck and end up on Planet Potaufeu, where a criminal named Gryll unseals the dangerous Commeson. Vegeta arrives to rescue them but is absorbed by the entity, creating Duplicate Vegeta.
A chain of small accidents sets the plot in motion. Goten and Trunks sneak into Monaka's delivery truck at Capsule Corporation to play, get locked inside, and are carried into deep space before anyone notices. They arrive on Planet Potaufeu, where an elderly guardian named Potage has been protecting a dangerous sealed weapon for over a century. An intergalactic criminal named Gryll and his gang are already on the planet, seeking the very thing Potage guards.
After Trunks and Goten easily dispatch Gryll's henchmen, the criminal takes Monaka hostage and forces everyone to stand down. Using a stolen key shaped like a pacifier, Gryll unlocks the seal on the Superhuman Water, a substance whose true name is Commeson. Whatever he sees inside the container makes him scream. The Commeson absorbs Gryll and his men, creating purple-hued duplicates that possess all the power of their originals.
Back on Earth, Bulma discovers the boys are missing through surveillance footage and blackmails Jaco into flying to Potaufeu by threatening to expose an embarrassing drawing he made of the Galactic King. Vegeta is dragged along for the ride. Upon arriving, Vegeta effortlessly handles the duplicated criminals, but a tendril of Commeson sneaks behind him and absorbs his power. The episode ends with the Saiyan prince staring in shock at a perfect purple replica of himself.
The Commeson is a refreshingly different kind of antagonist for Dragon Ball. Rather than an overwhelmingly powerful foe, it is an adaptive weapon that turns a warrior's own strength against them. The real tension comes not from whether anyone is strong enough to win, but from the fact that victory through brute force is exactly what feeds the threat. Vegeta's defeat is especially effective because he walks into it with total confidence.
The comedic elements balance the darker implications well. Bulma's blackmail of Jaco, the boys' casual defeat of armed criminals, and Goku cheerfully training on King Kai's planet in blissful ignorance all keep the tone light. Meanwhile, Potage's century-long vigil as the sole survivor of his people hints at how catastrophic the Commeson once was, providing genuine stakes beneath the humor.
This episode launches the Copy-Vegeta Saga, one of Dragon Ball Super's shorter and entirely anime-original arcs. The premise gives Vegeta something he rarely gets: a storyline built around his own vulnerability rather than his pride. Being stripped of his power and forced to rely on others is a deeply uncomfortable position for the prince, which makes it compelling to watch. Monaka's continued presence as an unwitting catalyst for adventure reinforces the running joke established in the previous arc. The Commeson's ability to replicate not just power but personality will become a key plot point in the episodes ahead.

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