Goku challenges the Saiyan prince Vegeta. Using the Kaio-ken, Goku gains power that exceeds that of Vegeta. The prince then uses the Galick Gun and Goku uses a Kamehameha. Goku's blast wins the beam struggle but Vegeta then transforms into a Great Ape. Goku then somehow wins the battle.
If Vegeta is beaten in his normal form by not pressing the transformation button or defeating him in the Beam Struggle if he had only one health bar left, then Goku will say 'I..I won!'
Unlock: Scenario Frieza Saga/Special Saga; Stage Super Saiyan?!/Strongest in the World