When an earthquake unleashes dangerous paranormal forces, the beliefs and biases of humankind face a reckoning. Roman Mercer, a troubled medium and local pariah, must fight figurative and literal demons to stop a mass haunting in his remote Alaskan town of Port Moore. The prejudiced townsfolk stand in his way, unable or unwilling to see the threat -- at least, until the unexplainable and horrific incidents become too dire to overlook. Mercer's psychic abilities may prove to be the people's only salvation.