It's sometime in the future, and mankind's exploration of outer space has hit a snag. Though there's a successful space base on the moon, repeated attempts to reach Mars have met with failure, and each time that failure has coincided with the appearance of a mysterious UFO. Nonetheless, the Japanese space agency has decided to try yet another attempt to reach the red planet, this time using the newly designed spaceship AAB-Gamma. The mission is commanded by the stern Captain Sano (Toshiya Wazaki), and includes amongst the crew European biologist Lisa (Peggy Neal), the clownish Miyamoto (Shinichi Yanagisawa) and physician Dr. Shioda (Keisuke Sonoi).
The expedition reaches the vicinity of Mars when, sure enough, the UFO appears. Suddenly, Dr. Shioda suffers a medical emergency, forcing Sano to head for the moon base where Shioda is replaced by the very cranky Dr. Stein (Mike Daneen). They set off again for Mars, only to have the ship damaged by a meteor. The UFO appears again, this time covering the outside of the ship with mysterious spores. They take one of the spores as a sample and Sano decides to abort the mission and return to Earth.
On Earth, the spore is left alone in a containment room at the space agency laboratory, but very quickly something hatches out of it and escapes from the facility by burning a hole in the floor. In short order, the mysterious creature grows to a humongous size and proceeds to rampage across the countryside. The beast is given the name Guilala (presumably for a lack of anything better) and, as is to be expected in a movie like this, turns out to be impervious to military force. Will Japan be destroyed under the feet of the monster, or will a weapon capable of stopping Guilala be discovered before it's too late?
Directed by Kazui Nihonmatsu.
Color/89 minutes/NTSC format in English (NOTE: If the you get a silent soundtrack when you first play the DVD, use your "Audio" button on your remote control to switch audio tracks and that should solve the problem)
This film is presented as DVD-ready .VOB files that are all ready to be burned to disc.