When an ancient, and rather large, idol, called the Devil's Whistle is removed from its resting place on Wester Island, the monster Jiger emerges from her slumber and is soon attacked by Gamera...for relatively unknown reasons, to be perfectly honest. After defeating Gamera, Jiger makes her way to Osaka, Japan, where the idol is being held at the World Expo. Jiger destroys everything in her path, both before and after arriving in Osaka, until Gamera returns for a rematch. Gamera is once again defeated when Jiger injects him, via her barbed tail, with an embryo of hers. Gamera soon falls into the bay unconscious, and it is up to two young boys to take a small submersible into Gamera's body and destroy the embryo, in the first onscreen act of abortion ever seen in a giant monster movie. Afte