In order to wish for immortality and avenge his father, Garlic Jr. collects the dragon balls, kidnapping Goku's son Gohan in the process. Goku, Kami, Piccolo, and Krillin unite to rescue Gohan and save the world from being sucked into a dead zone.
Where To Watch.
Currently Dragon Ball Z: Dead Zone full movie is available for streaming online, rent, buy or watch for free on: Apple iTunes, Funimation Now
Dragon Ball Z: Dead Zone, originally released theatrically in Japan as simply Dragon Ball Z and later as Dragon Ball Z: Return My Gohan!! (Japanese: ドラゴンボールZ オラの悟飯をかえせッ!!, Hepburn: Doragon Bōru Zetto Ora no Gohan o Kaese!!) for its Japanese VHS and Laserdisc release, is a 1989 Japanese anime fantasy martial arts film, the fourth installment in the Dragon Ball film series, and the first under the Dragon Ball Z moniker. It was originally released in Japan on July 15 at the "Toei Manga Matsuri" film festival along with the 1989 film version of Himitsu no Akko-chan, the first Akuma-kun film, and the film version of Kidou Keiji Jiban.
Despite continuity inconsistencies, Dead Zone acts as a prelude to the Dragon Ball Z television series and is the only film to get a follow-up within the series, that being the Garlic Jr. arc which takes place between the main Frieza and Android arcs. The canonicity of this arc is debated as it does not appear in the original manga and is largely considered to be filler.