Greedy sailors capture a giant lizard off the coast of Ireland and sell it to a London circus, inciting the wrath of the creature's much-larger mother.

A salvage vessle is nearly sunk off the Irish coast by an undersea earthquake. A few nights later, a walking sea monster tangles with the fishing boats and enters the town. The salvage vessel captures Gorgo and takes it to London for display. Gorgo's mother, who is upset and significantly larger follows his trail to London leaving a wake of destruction in her path.—John Vogel <[email protected]>