Neither bombs, bullets, jets or rockets can stop Gorgo...but one little boy knew his secret!A volcanic eruption in the North Atlantic brings to the surface a 65-foot prehistoric monster. Two treasure divers capture the creature and take him to London where he's made the star attraction at a circus. A scientist points out that the sailors' bonanza is only an infant, and that a full-grown specimen would be over 200 feet tall. Sure enough, Gorgo's mama comes thundering ashore, reclaims her offspring, and heads back to sea…but not before she cuts a wide swath through London.