Dragon Ball Z Lord Slug, also known by its Japanese title Dragon Ball Z Super Saiyan Son Goku Japanese Z , Hepburn Doragon Bru Zetto Sp Saiyajin da Son Gok? is the fourth Dragon Ball Z feature movie. It was originally released in Japan on March 19, 1991 between episodes 81 and 82 at the Toei Anime Fair as part of a double feature with the first Magical Tarurtokun movie. An American English dub was produced by Funimation and released to VHS and DVD on August 7, 2001. Two other English dubs were also produced, one in France by AB Groupe done for European markets which was released under the misspelt title Super Saiya Son Goku, and another one for a Malaysian VCD release by Speedy Video which had the title Super Saiya People, Goku. While the Malaysian dubs cast remains unknown, the AB Groupe dub is now believed to have been recorded by Englishspeaking actors based in France who have also done voices for animated television series such as Code Lyoko and Chris Colorado.
While meditating beside a waterfall, Piccolo is approached by Gohan and Icarus, with Gohan showing Piccolo a tune he has just learned to whistle. To his shock, Piccolo finds the noise excruciatingly painful due to his enhanced Namekian hearing, and angrily orders Gohan to stop. Meanwhile, at the Capsule Corporation compound, Bulma and her father discover that a meteor is heading toward the Earth and will most likely destroy the planet upon impact. Amidst mass panic throughout the Earth, Goku and Krillin rush to intercept the meteor, blasting it with Kamehameha waves, but fail to damage it. The meteor, however, does not hit Earth, instead passing it and exploding in orbit. When the dust clears, a strange building is present on the Earth.An army of armored soldiers comes out of the building and declares the Earth to be under the rule of their leader, Lord Slug, and terrorize the citizens for laughing at them. Gohan and ChiChi appear and fight the soldiers, whose eyes appear to be hypersensitive to the sunlight, but ChiChi is easily subdued and Gohan loses his hat with the fourstar Dragon Ball as Slug himself appears and takes it. Bulma appears and defies Slugs henchmen, who reveal their intentions to Terrafreeze the Earth and turn it into their own star cruiser. Slug reads Bulmas mind and learns about the Dragon Radar, and orders his men to find the remaining six Dragon Balls in one hour. ........
Source: Wikipedia