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.

Cover-up rogues imperil Laura and Rich, who are dogged by assassins while seeking evidence of the predatory sea creatures. Also: Niles goes to great lengths to protect Nim, whose discovery has serious ramifications with Niles' parents.