DBZ Budokai: Tenkaichi 3 - Majin Buu Saga (Battle for the Universe)

After Gohan kills Cell, 7 years of peace has passed with Goku no longer in the world of the living. The Z Fighters then decide to participate in a Martial Arts tournament where they'll meet Goku again for a full 24 hours on Earth. Things go smoothly until a new threat to Earth appears. The Z Fighters pursue the threat and the dark spellcaster known as Babidi takes over Vegeta's soul and refills it with old darkness. Gohan then proceeds to go after Babidi and the unhatched Majin Buu while Goku and Vegeta stay behind to settle their differences after all these years.