Dragon Ball Z Gaiden: Saiyajin Zetsumetsu Keikaku (ドラゴンボールZ外伝 サイヤ人絶滅計画, Doragon Bōru Zetto Gaiden Saiyajin Zetsumetsu Keikaku; lit. "Dragon Ball Z Side Story: Plan to Eradicate the Saiyans") is a mini-series in the Dragon Ball franchise. The series debuted in 1993 with its first, eponymous video game installment, and was followed over the year by an original video animation (Plan to Eradicate the Saiyans) and two video games using its footage (Chikyū-Hen and Uchū-Hen).
Dr. Raichi is the only survivor of the Tuffles, a race that once lived on Planet Plant before the coming of the Saiyans. The Saiyans not only massacred the entire Tuffle race, but also stole their technology and conquered the planet, renaming it Planet Vegeta in honor of their king. Raichi managed to escape with a capsule and found refuge on the Dark Planet, a world at the end of the universe. His only wish is to eradicate the last remaining Saiyans.
To do this, Dr. Raichi puts devices on Earth that emit Destron Gas and destroy all life. When Mr. Popo finds out that only a few hours are left until the planet's destruction, Goku, Gohan, Vegeta, Future Trunks, and Piccolo rush to destroy the evil devices located around the planet. They manage to destroy all but one that is protected by an impenetrable energy barrier. However, Frieza, Cooler, Turles and Lord Slug appear and engage the heroes in individual fight. It is revealed by King Kai that the villains are "Ghost Warriors", and will continually come back to life when killed unless defeated in the same way their lives were originally ended.
The heroes track down Dr. Raichi to the Dark Planet and engage him, discovering that his Ghost Warriors are generated by a machine called Hatchiyack, a device powered by the hate of the Tuffles. It is also revealed that Dr. Raichi is a Ghost Warrior himself, generated by Hatchiyack. When Vegeta vaporizes Raichi, preventing him from re-materializing, the hate Dr. Raichi had causes Hatchiyack to exceed its limit. Hatchiyack appears in a powerful android body, whose power is said to match or perhaps even exceed Broly's, according to Goku. Hatchiyack devastates the heroes until the Saiyans, after having transformed into their Super Saiyan states, combine their powers together into one massive Energy Wave, ending the threat of the Ghost Warriors.
- Dragon Ball Z Gaiden: Saiyajin Zetsumetsu Keikaku (NES, 1993)
- Dragon Ball Z Gaiden: Shin Saiyajin Zetsumetsu Keikaku - Chikyū-Hen (Playdia, 1994)
- Dragon Ball Z Gaiden: Shin Saiyajin Zetsumetsu Keikaku - Uchū-Hen (Playdia, 1994)
Original video animationsEdit
- Dragon Ball Z: Plan to Eradicate the Saiyans (1993)
- Dragon Ball: Plan to Eradicate the Super Saiyans (2010)