Gamera vs. Barugon

“Gamera burns the streets of Osaka in an instant! Barugon freezes Osaka Castle with a single gust! An underwater clash at Lake Biwa!”

Keisuke Hirata (Kōjirō Hongō) wants the giant opal waiting in New Guinea, and he takes the trip with a crew of greedy entrepreneurs who see only its price. They carry it home to Japan, where it turns out to be an egg, and Shigeo Tanaka lets the creature hatch while Gamera comes down from space. Keisuke, with the delicate Karen (Kyōko Enami) beside him, learns what the stone he helped steal has let loose.