It survived in the darkness, but it craved the light.
The quake of the century rocks northern California, splitting a tectonic plate and unleashing the Pacific Ocean on the sheltered vale of Gullhaven. The inlet to the sea through the steep bluffs is blocked, and Blackwater Bay rises, flooding the valley as the foundations of the Earth shift, causing a rift in the bay floor and awakening a bloodthirsty leviathan.
Trapped sharks prowl the flooded streets, orcas stalk the bay, and something darker emerges from the depths. With the water rising and time running out, Blackwater Bay Constable Leonard Cannon devises a desperate plan to save Gullhaven, but an ancient beast with a primal hunger stands in his way and it must feed.