Super Dragon Ball Heroes

Future Trunks suddenly disappears, and the search for him draws Goku and Vegeta to Prison Planet, a sealed world where the mysterious Fu has gathered fighters from different times and universes for his experiments. There they face enemies and alternate versions of warriors who should never have met, while Fu's schemes grow from a dangerous game into a threat capable of reaching entire worlds. As Saiyans, divine powers, and fighters who can interfere with time collide, each battle pushes beyond ordinary limits and turns the structure of the universe itself into part of the conflict.