X - Nestvura z vesmíru was released in the year 1967。X - Nestvura z vesmíru is also called as Uchu daikaijû Girara, The X from Outer Space, Odissea sulla Terra, Guila - Frankensteins Teufelsei, Girara, Gilala, Big Space Monster Guilala。

The spaceship AAB-Gamma is dispatched from FAFC headquarters in Japan to make a landing on the planet Mars and investigate reports of UFOs in the area. As they near the red planet, they encounter a mysterious UFO that coats the ship's hull with unusual spores. Taking one of the specimens back to earth, it soon develops and grows into a giant chicken-lizard-alien monster that tramples Japan.