Dragon Ball GT - Preparation (Vol. 6)
After delivering Pan from the grip of Baby-Vegeta, Uub begins his assault!  Goku tried his best to train Uub for this moment, but when Baby-Vegeta turns Uub’s best shot against him, Goku’s young protégé is beaten and devoured!  Watching from the safe haven of the Heavenly Realm, Goku undergoes torturous training to prepare himself for the inevitable final showdown with Baby!  If successful, Goku stands to reach a level of power greater than anyone could possibly imagine…the unbelievable Super Saiyan 4!