A giant monster that emits a destructive ray from its back attacks Japan and takes on Gamera.

After a treacherous expedition to retrieve a giant opal, disaster strikes as the opal reveals itself to be an egg which spawns Barugon, demon dog from Hell! Armed with a deadly tongue and cold beams, Barugon wreaks havoc on Japan. Gamera comes to save the day.—Jonah Falcon <[email protected]>