When a giant stone statue on Wester Island is disturbed, the legendary monster Jiger appears and heads for Japan. Gamera tries to stop this new rival, only to be injured when Jiger lays eggs inside of him. As two boys in a submarine go on a dangerous quest inside of Gamera's body to save him, Jiger threatens the Expo '70 world's fair in Osaka.
Tsutomu Takakuwa
Hiroshi Kitayama
Kelly Varis
Tommy Williams
Katherine Murphy
Susan Williams
Ryô Hayami
Keisuke Sawada
Franz Gruber
Dr. Williams
Junko Yashiro
Miko Kitayama
Kon Omura
Ryosaku Kitayama
Umenosuke Izumi
Gamera
