Dragon Ball In Space (めざせ！ナメックの星, Mezase! Namekku no Hoshi; lit. "Go For It! The Planet Namek") is the twenty-first volume of the original Dragon Ball manga series. It was released on April 10, 1990 in Japan, and in March, 2003 for the English version. It is released in North America as Dragon Ball Z volume five, with the chapter count restarting back to one. It concludes the Vegeta Saga and the marks the beginning of the Namek Saga.
Volume introduction by Akira Toriyama
"Aaaugh…! The thing I feared most happened again. The cavity that I’d left alone because I hate going to the dentist started to hurt. It was the day of the deadline for my manuscript, but the pain was so bad I couldn’t sleep. I just couldn’t bear it, so I ran to the dentist’s, but I was too late, and had to get it pulled. Then, I was forced to work while dealing with the pain. It may have been my fault, but it was still the worst, most hellish day…."
Barely able to crawl, Vegeta flees Earth. Kuririn, Gohan, and Bulma leave to gather Namek’s Dragon Balls. Gohan and Kuririn arrive on Namek and are attacked by two of Freeza’s men. Vegeta shows up shortly thereafter and kills Kewi. Goku recovers and heads to Namek.
|Master Roshi and the gang start to look for Goku, while Krillin is about to kill Vegeta with Yajirobe's sword. However, Goku does not allow Krillin to murder Vegeta because he wants Vegeta to get stronger so Goku can become the strongest Saiyan.|
|"The Bittersweet End"|
|Krillin tells Bulma about the death of Yamcha, Tien and Chiaotzu. Chi-Chi runs out and starts looking for a near-dead Gohan, and he is found. Chi-Chi decides not to care about Goku, while the gang collects the corpses of their friends. Krillin tells his friends about the planet Namek, and Goku talks to King Kai telepathically to learn about Namek.|
|King Kai tells Goku the coordinates for Namek, and Bulma forces Master Roshi to drive the capsule airplane. Bulma finds out that it would take 4233 years to get to Namek by spaceship, but Krillin remembers Nappa's space pod. In Wukong Hospital the next day, Bulma accidentally blows up the space pod.|
|"The Mysterious Spaceship"|
|Mr. Popo comes up to the hospital window and invites Bulma to come with him to find a spaceship. On a magic carpet, the two are transported to the Yunzabit Highlands in the far corner of the Earth. Mr. Popo tells Bulma that Kami had come to Earth on the spaceship when he was one person, and Mr. Popo demonstrates the spaceship's powers when he speaks Namekian to transport Bulma and he to Jupiter.|
|"3... 2... 1... Lift Off!"|
|Bulma tells Krillin that she needs him to go to Namek. Against his mother's wishes, Gohan removes his bandages and demands that he go to Namek. Because the spaceship is activated by Namekian, Mr. Popo teaches Bulma Namekian. On the day of takeoff, Bulma appears angry that she was the only person to dress for a cold trip to Namek. In the ship, Gohan sneaks up some clothes designed in the style of Piccolo.|
|"The Return of Vegeta"|
|On Planet Frieza 79, soldiers notice Vegeta coming back on his space pod, and are shocked that he is flying auto-pilot. Malaka heals up Vegeta, who reveals that Nappa is dead. He throws out his scouter, but when Cui tells Vegeta that Frieza is on his way to Namek, Vegeta takes his scouter back and flies off to Namek. Meanwhile, Bulma and the gang approach Namek.|
|"Planet Namek, Cold and Dark"|
|Bulma and the gang land on Namek, but they are surprised when they see Vegeta's ship fly over Namek. Soon, Bulma decides that she will return to Earth. Meanwhile, Frieza terrorizes a Namekian village, killing all the Namekians and stealing their Dragon Balls so he can wish for immortality.|
|"The Mysterious Strangers"|
|"Vegeta's True Power"|
|"Goku Returns! Again!"|
|"Son Goku's Spaceship"|
|Volume 21: Dragon Ball In Space|
|Goku's Request · The Bittersweet End · Destination Namek · The Mysterious Spaceship · 3... 2... 1... Lift Off! · The Return of Vegeta · Planet Namek, Cold and Dark · The Mysterious Strangers · Vegeta's True Power · Goku Returns! Again! · Son Goku's Spaceship · Namekian Fear|