Super Dragon Ball Heroes is a Japanese original net series for card and video games of the same name. The show aired in 2018, and thirty-eight episodes have been released so far with one filler.
When Goku, Vegeta and Future Mai return from the Tournament of Power they are informed by a mysterious figure named Fu that Future Trunks has been taken captive on an unknown planet called Prison Planet. There they find out that it was controlled by Frieza’s brother Cooler who had captured their son for years before freeing him with help from our heroes after defeating his cyborg alter ego “Cumber”.
The events taking place upon this prison world were planned by Hearmastermind- to eliminate both Zeno and his counterpart to take control over what remains when all others die.
