Dragon Ball Z: Saiya-jin Zetsumetsu Keikaku
English name: Dragon Ball Z: Plan to Eradicate the Saiyans
Genres: Adventure, Comedy, Fantasy, Sci-Fi
Type: OVA, Episodes: 2
Aired: Jul 23, 1993
Studio: Toei Animation
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Dr. Raichii is the only Tsufurujin (the race eradicated by the Saiyajin many years ago) thought to have survived. He now is going to take revenge on the only surviving Saiyajin still alive, Goku and Vegeta. He uses machines that emit destron, a gas that will destroy all life on Earth. Now the the Z warriors only have 72 hours to find and destroy Dr. Raichii.

(Source: ANN)