The X from Outer Space, is a 1967 kaiju film released by the Japanese film studio Shochiku. It is the first of its kind released by Shochiku, and was one of the many giant monster films made during the late '60s "monster boom" in Japan. 1967 saw the release of a monster film from each of the big studios.
The film was directed by Kazui Nihonmatsu and starred Eiji Okada and Toshiya Wazaki. It has gone under many alternative titles, including Big Space Monster Guilala. The monster, known as Guilala in Japan, is also called "Gilala" and "Girara". The film was released in the United States in 1968 as The X from Outer Space.
The spaceship AAB Gamma is dispatched from Japan to travel to Mars to investigate reports of UFOs in the area. When the Gamma nears the red planet, it comes across a mysterious alien vessel that sprays the ship with spores. Samples are taken back to earth where one of them begins to develop.
The cosmic spore grows into a giant, lizard-like creature dubbed "Guilala". The monster begins a reign of destruction through Tokyo. It spits fireballs, feeds on nuclear fuel, turns into a flying, burning sphere and destroys any airplanes and tanks in its path. Guilala is finally defeated by jets laden bombs, which coat it in a substance called "Guilalalium." It causes Guilala to shrink down to its original spore form. The government promptly launches the spore back into space, where it will circle the sun in an endless orbit.