Dragon Ball Z, Vol. 8 by Akira Toriyama

Sci-Fi martial arts action!

After years of training and adventure, Goku has become Earth's ultimate warrior. And his son, Gohan, shows even greater promise. But the stakes are increasing as even deadlier enemies threaten the planet. DRAGON BALL Z is the ultimate science fiction-martial arts manga.

Forced to ally with Vegeta against their common enemy, Gohan and Kuririn fight desperately against Freeza's elite troops, the seemingly unstoppable Ginyu Force! But the tables may be turning as Son Goku finally arrives on Planet Namek, his strength and speed increased ten-fold by training under 100 times Earth's gravity! Could Goku have become the legendary "Super Saiyan"!? And even if they defeat Captain Ginyu, can they prevent Freeza from wishing for immortality on the Dragon Balls—and Vegeta from betraying them and doing the same?