A Category 4 hurricane punched a quarter mile hole in Fire Island, exposing the Great South Bay to the ferocity of the Atlantic Ocean, and the current pulled something terrible through the new breach. A monstrosity of the past mixed with the present has been disturbed and it's found its way into the sheltered waters of Long Island's southern sea. Nate Tanner lives in Stones Throw, Long Island. A disgraced SCPD detective lieutenant put out to pasture in the marine division because of his Navy background and experience with aquatic crime scenes, Tanner is assigned to hunt the creeper in the bay. But he and his team soon discover they're the ones being hunted.