DragonBall Z: Vegeta Saga 1 - Piccolo's Plan ( Vol. 2 )
The situation looks bleak for Goku, but his new ally Piccolo may have a way to stop Raditz. He’s perfected a powerful new attack, yet one problem remains.  Piccolo needs time to gather the energy for the blast, which means Goku will have to last for five minutes against Raditz alone!  As Goku takes blow after punishing blow from the evil Raditz, Gohan’s rage is triggered.  The young Saiyan unlocks an awesome power sleeping within him, unleashing a mighty attack that not even Radtiz can resist!