Super Dragon Ball Heroes

Trunks travels back from the future to train alongside Goku and Vegeta, but he vanishes unexpectedly. Suddenly, a mysterious figure named Fu appears, revealing that Trunks has been trapped on the enigmatic Prison Planet, a complex located in an unknown part of the universe. The team embarks on a quest to find the dragon balls to liberate Trunks, but they face relentless battles along the way. Can Goku and his friends manage to rescue Trunks and break free from the Prison Planet?