

When a rare species of butterfly is found in a mysterious valley in Japan, a pair of entomologists go to investigate and find more. They discover Varan, a giant monster, who decides to leave the valley and head straight for Tokyo.
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Cast

Kōzō Nomura
Kenji Uozaki

Ayumi Sonoda
Yuriko Shinjô

Koreya Senda
Dr. Sugimoto

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
Akira Sera
Village High Priest

Akio Kusama
Military Officer Kusama
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