In 1980, a giant planetoid named Gorath is discovered to be on a collision course with Earth. Even though it is smaller than Earth, its mass is huge enough to crush the earth and destroy it. A mission is sent to observe Gorath but is destroyed after all the orbiting ships are drawn into the planetoid. Afterwards, a later mission is also sent to observe but the crew barely leaves before suffering the same fate. However, Astronaut Tatsuma Kanai (Akira Kubo) is left in a catatonic state, due to his near death experience. Earth's scientist then come up with a desperate plan to build giant rockets at the South Pole to move Earth out of Gorath's path before it is too late. Also stars Ryô Ikebe, Yumi Shirakawa and Kumi Mizuno. Also with Akihiko Hirata, Kenji Sahara and Jun Tazaki. (In Japanese language, with English subtitles).
This film comes from a very nice widescreen import print which includes the rare Giant Walrus sequence that was cut from all U.S. prints.
Originally, this film wasn't going to include the giant walrus, Magma. However, producer Tomoyuki Tanaka insisted that the monster be included in the film, so Ishiro Honda added the sequence, albeit reluctantly.