Dragon Ball Z: Fusion Reborn

The universe is thrown into dimensional chaos as the dead come back to life. Now Goku and Vegeta must track down the cause of this uproar.
Not paying attention to his job, a young demon allows the evil cleansing machine to overflow and explode, turning the young demon into the infamous monster Janemba. Goku and Vegeta make solo attempts to defeat the monster, but realize their only option is fusion.