Gamera vs. Gyaos
Gamera vs. Gyaos (大怪獣空中戦 ガメラ対ギャオス, Daikaijū kūchūsen: Gamera tai Gyaosu, Giant Monster Midair Battle: Gamera Versus Gyaos, released in the U.S. as Return of the Giant Monsters) is a 1967 Kaiju film directed by Noriaki Yuasa and written by Nisan Takahashi. It is the first Gamera film to feature the Kaiju character Gyaos, who would later become Gamera's most popular rival to date as the character would later be used for Gamera: Guardian of the Universe, Gamera 3: The Revenge of Iris and Gamera the Brave.
Gamera vs. Gyaos was released in the United States by AIP-TV as Return of the Giant Monsters, and later by Sandy Frank as Gamera vs. Gaos. It was one of five Gamera films to be featured as episodes of the movie-mocking television show Mystery Science Theater 3000.
Plot
A series of volcanoes erupt in Japan. The eruption at Mt. Futago (in Shizuoka Prefecture) attracts Gamera, whose arrival is witnessed by a young boy named Eiichi. Gamera then climbs up and into the volcano. A research team is dispatched to the volcano to find Gamera and study the effects of the eruption. Meanwhile, Chuo Expressway Corporation is building a roadway nearby, but local villagers refuse to leave.