In an effort to find an economic means of purifying salt water, a joint U.S.-Japanese military command is set up on an isolated Japanese island where an unusual salt water lake is situated. However, their purifying experiments arouse the prehistoric monster Obaki from hibernation at the lake's bottom, and it proceeds to attack Japan. Although made by a U.S. independent film company, this film was based on a Japanese Toho monster film of 1958, "Daikaiju Varan", from which all of the monster effects scenes and a few incidental dramatic shots were edited into it.
Myron Healey
Tsuruko Kobayashi
Clifford Kawada
Derick Shimatsu
Koreya Senda
Kōzō Nomura
Ayumi Sonoda
Fumito Matsuo
Akihiko Hirata
Fuyuki Murakami
Yoshio Tsuchiya
Minosuke Yamada
Hisaya Ito
Yoshifumi Tajima
Nadao Kirino
Akira Sera
Akio Kusama
Noriko Honma
Akira Yamada
Fumindo Matsuo
Yoshikazu Kawamata
Yasuhiro Shigenobu
Shōichi Hirose
Takashi Itô
Hideo Shibuya
Toshitsugu Suzuki
Haruo Nakajima
Katsumi Tezuka