Within the Juan de Fuca fault, monsters stir. A coastal town nestled just outside Seattle, Everett is a picture-perfect paradise, but the Indigenous myths tell of when the darkness came out of the ocean and killed everything, the world cleansed and begun anew. An unusual specimen washed up on the shore has Professors Charlie Wice and Carol Wheatley buzzing with excitement, but what the ocean has spat out is far more dangerous than either could imagine. As the darkness slithers closer, and the deaths start to mount, the residents of Everett and St Aloysius Island are locked in a battle against an enemy as implacable as they are numerous. As the earth shakes once again, another battle looms on the horizon – fast flowing and deadly. Who will survive when the ocean bares its fangs?