Dragon Ball Z: Fusion Reborn

A careless young demon neglects his duties, causing an evil cleansing machine to overflow and explode, resulting in the birth of the formidable Janemba. As Goku and Vegeta confront this powerful foe individually, they quickly discover that their best chance for victory lies in fusion. United, they must harness their combined strength to take on Janemba and restore balance, facing challenges that test their limits and resolve. The stakes are high as they navigate this intense battle against a creature born from chaos.