Freeza, who destroyed the Saiyan planet in the battle with Bardock (Goku's father) is in search of the Dragonballs on Planet Namek (Piccolo's home planet) to become immortal. Bulma later discovers that there are Dragonballs on the Namek, but it would take thousands of years to travel there. PoPo appears and tells about the ship that Piccolo and Kami took to travel to Earth. With a faster spaceship, Krillin, Gohan, and Bulma reach Namek to gather the dragonballs to revive Yamcha, Tien, Chauzu, and Piccolo, and they encounter Freeza. (The Earth dragonballs vanished when Piccolo was killed.) Vegeta also goes to Namek to gather the dragonballs for immortality to kill Freeza. Goku later also travels to Namek after recovering from the battle against Vegeta. Meanwhile, Vegeta begins his fight against Freeza. Minions such as Dodoria, Freeza's right-hand man, are killed. Later, Freeza's other chief henchman, Zarbon, is also killed. Vegeta joins the Z Warriors, but only to insure that Goku survives the battle so that he could kill him personally. (However, Vegeta ends up falling in love with Bulma, and Bulma is now pregnant with Trunks.) Freeza then calls on the Ginyu Force to fight the Z warriors, but the Ginyu Force was killed by Vegeta (except for Ginyu, who accidently turned into a frog when he tried to swap bodies with Vegeta and Goku threw a frog in his path). Then, follows the fights against Freeza, who goes through 3 transformations to reach perfect form. On one battle, Krillin is killed and Goku enrages in an anger that he reaches Super Saiyan level for the first time. (This is when the golden hair comes in.) He beats Freeza (as well as destroy Freeza's planet) with a single blast, and Freeza learns about the true powers behind a Super Saiyan. Afterwards, Goku escapes to planet Yardrat, where he learns the ability to teleport. However, everyone thinks that Goku was killed in battle. Freeza's father, King Cold, learns about Freeza's defeat and quickly gathers Freeza's body parts, which are floating around in space. His henchmen re-ensemble Freeza. (This is why Freeza was half robotic.) Freeza tells his father about Goku and his powers, but his father doesn't believe him and boasts that he is the universe's strongest warrior.(These villians are space conquerers.) Freeza, Cold, and his crew land on earth to seek revenge on the Z Warriors and to destroy Earth. All of a sudden, a figure comes out of nowhere and adult Trunks appears. He turns into his Super Saiyan level and aids the Z Warriors in their fight. Trunks faces Freeza and his crew and easily kills them. (The dead Z Warriors were restored to life with a wish from the Dragonballs on planet Namek.) Trunks introduces himself as Bulma's and Vegeta's future son who grew up and traveled back in time with medicine to prevent the death of Goku so that future would not be in chaos. Everyone thinks that Goku is dead, but Trunks tells that Goku is on Yardrat and will return soon. (This is the story of what happens in the next Dragonball Z series--the Cell series.) However, Vegeta is jealous over the fact that there is another Saiyan around (his own son) now, who is stronger than him.