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.

• TOHO
• Kōzō Nomura
• Ayumi Sonoda
• Koreya Senda
• Akihiko Hirata
• Fuyuki Murakami
• Yoshio Tsuchiya
• Minosuke Yamada
• Hisaya Ito