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. Cell has fused with android #17 becoming practically invincible--but not for long! Training in the Room of Spirit and Time where a year passes for every day outside Vegeta and Trunks have gone beyond the Super Saiyan reaching a level of power even greater than second-stage Cell! Now Cell is the one who is outmatched--but Vegeta hates a boring fight. Succumbing to his pride Vegeta agrees to help Cell fuse with android #18 the last element he needs to become perfect so he can have the honor of defeating the strongest being in the world!