"Invasion of Astro-Monster," also known as "Godzilla vs. Monster Zero," is a Japanese kaiju film released in 1965. Directed by Ishirō Honda, the movie revolves around astronauts Glenn (Nick Adams) and Fuji (Akira Takarada), who journey to the newly discovered Planet X. There, they encounter a race of aliens known as the Xiliens. The Xiliens request Earth's help to combat the terrorizing monsters King Ghidorah, Godzilla, and Rodan, who are threatening their planet.