Beachmaster is the story of a one ton Stellers sea lion that escapes from a major public aquarium off the coast of Connecticut. His name is Goliath and there is one thing on his mind: find a female to mate. Ben Harrington, the Curator and Ronnie Semanski, his aquarist and romantic interest are determined to rescue Goliath from some who want him dead because of the destruction and deaths he causes in his vain attempt to find a mate. Unfortunately, Stellers only inhabit the west coast. To complicate matters, a psychopath masking as an animal activist threatens Ben and Ronnie as well as Goliath in his attempts to get revenge under the guise of saving the animals.