Synopsis: Thanks to the Kaio-ken x3 technique, Goku has the upper hand against Vegeta, but the Saiyan Prince will not give up so easily. He decides that if he can't beat Goku, he will destroy the Earth. He flies high up in the air and fires his Galick Gun attack. Goku unleashes the Kamehameha wave, and the two energy blasts meet in midair. Goku and Vegeta pour all of their energy into this attack, and after a long struggle, Vegeta's blast is pushing Goku's back, even with Goku using the Kaio-ken x3 attack. With no choice left, Goku uses a Kaio-ken x4 attack, and with the extra power, he is able to blast Vegeta into space. However, Vegeta is able to recover, and flies back down to Earth. Goku is completely spent, and Vegeta claims to have a trick up his sleeve. After telling Goku the origin of how Saiyans transform into Oozarus by Blutz Waves: an energy source that exceeded 17 million zenos during the full moon, he creates and launches an artificial moon into the sky. Absorbing the Blutz Waves reflected from the artificial moon, Vegeta begins to transform into the Oozaru as Goku looked on in horror. Meanwhile, Krillin and Gohan feel the tremendous surge in energy coming from the battlefield, and decide to head back.?