A sea-creature hunt bonds Laura and Rich, who link up on an isle where a beast is beached. Elsewhere, the baby critter found by Miles wreaks havoc in suburbia; and a deceased creature still poses a threat to a team performing an autopsy.

A sea hunt obsesses Laura in a quest for the creature that enlists the aid of an adventurer and old flame, who confront the monstrous species in the ocean. Back on land, Miles' baby version of the creature creates havoc.