Dragon Ball Z (Japanese: ドラゴンボールZ ゼット Hepburn: Doragon Bōru Zetto, commonly abbreviated as DBZ) is a Japanese anime television series produced by Toei Animation. Dragon Ball Z is the sequel to the Dragon Ball anime and adapts the latter 325 chapters of the original 519-chapter Dragon Ball manga series created by Akira Toriyama, that were published from 1988 to 1995 in Weekly Shōnen Jump. Dragon Ball Z first aired in Japan on Fuji TV from April 26, 1989 to January 31, 1996, before being dubbed in several territories around the world, including the United States, Australia, Europe, India, and Latin America.

*Spoilers Ahead*
Plot:
Dragon Ball Z picks up five years after the end of the Dragon Ball anime, with Son Goku as a young adult and father to his son Gohan. A humanoid alien named Raditz arrives on Earth in a spacecraft and tracks down Goku, revealing to him that he is his long-lost big brother and that they are members of a nearly extinct extraterrestrial race called the Saiyans (サイヤ人 Saiya-jin). The Saiyans had sent Goku (originally named “Kakarrot”) to Earth as an infant to conquer the planet for them, but he suffered a severe head injury soon after his arrival and lost all memory of his mission, as well as his blood-thirsty Saiyan nature. Goku refuses to help Raditz continue the mission, which results in Raditz kidnapping Gohan. Goku decides to team up with his former enemy Piccolo in order to defeat Raditz and save his son, while sacrificing his own life in the process. In the afterlife, Goku trains under Kaiō-sama until he is revived by the Dragon Balls a year later in order to save the Earth from Raditz’ comrades; Nappa and the Saiyan prince Vegeta. During the battle Piccolo is killed, along with Goku’s allies Yamcha, Tenshinhan and Chaozu, and the Dragon Balls cease to exist because of Piccolo’s death. Goku arrives at the battlefield late, but avenges his fallen friends by defeating Nappa with his new level of power. Vegeta himself enters into the battle with Goku and after numerous clashes Goku manages to defeat him as well, with the help of Gohan and his best friend Kuririn. At Goku’s request, they spare Vegeta’s life and allow him to escape Earth. During the battle, Kuririn overhears Vegeta mentioning the original set of Dragon Balls from Piccolo’s home planet Namek (ナメック星 Namekku-sei). While Goku recovers from his injuries at the hospital, Gohan, Kuririn and Goku’s oldest friend Bulma depart for Namek in order to use these Dragon Balls to revive their dead friends. However, they discover that Vegeta’s superior, the galactic tyrant Lord Freeza, is already there, seeking the Dragon Balls to be granted eternal life. A fully healed Vegeta arrives on Namek as well, seeking the Dragon Balls for himself, which leads to several battles between him and Freeza’s henchmen. Realizing he is overpowered, Vegeta teams up with Gohan and Kuririn to fight the Ginyu Force, a team of mercenaries summoned by Freeza. After Goku finally arrives on Namek, the epic battle with Freeza himself comes to a close when Goku transforms into a fabled Super Saiyan (超サイヤ人 Sūpā Saiya-jin) and defeats him.

Upon his return to Earth a year later, Goku encounters a time traveler named Trunks, the future son of Bulma and Vegeta, who warns Goku that two Artificial Humans (人造人間? Jinzōningen, lit. “Artificial Humans”) will appear three years later, seeking revenge against Goku for destroying the Red Ribbon Army when he was a child. During this time, an evil life form called Cell emerges and after absorbing two of the Artificial Humans to achieve his “perfect form,” holds his own fighting tournament to decide the fate of the Earth, called the “Cell Games”. After Goku sacrifices his own life a second time, to no avail, Gohan avenges his father by defeating Cell after ascending to the second level of Super Saiyan. Seven years later Goku, who has been briefly revived for one day and meets his youngest son Goten, and his allies are drawn into a fight by the Kaioshin against a magical being named Majin Buu. After numerous battles resulting in the destruction and recreation of the Earth, Goku (whose life is permanently restored by the Elder Kaioshin) destroys Majin Buu with a Genki Dama attack containing the energy of everyone on Earth. Goku makes a wish for Buu to be reincarnated as a good person and ten years later, at another martial arts tournament, Goku meets Buu’s human reincarnation, Uub. Leaving the match between them unfinished, Goku departs with Uub to train him to become Earth’s new defender.

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