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
Cmdr. James Bradley
Tsuruko Kobayashi
Anna
Clifford Kawada
Capt. Kishi
Derick Shimatsu
Matsu, the boy
Koreya Senda
Dr. Sugimoto
Kōzō Nomura
Paul Isoh
Ayumi Sonoda
Shidori Isoh
Fumito Matsuo
Paul's Friend
Akihiko Hirata
Dr. Fujimora
Fuyuki Murakami
Dr. Majima
Yoshio Tsuchiya
Military Officer Katsumoto
Minosuke Yamada
Secretary of Defense
Hisaya Ito
Ichiro
Yoshibumi Tajima
Captain of Uranami
Nadao Kirino
Yutaka Wada
