When Sarah Black receives a package from a mysterious messenger, she doesn't realize that by opening it and releasing its contents she has awoken an ancient conflict, and fallen headfirst into it. She is attacked and kidnapped by a dark, terrifying assailant, and suddenly Sarah finds herself trapped in yet another nightmare... a nightmare of abyssal whispers from the places beyond where light touches... a nightmare from the deep.
Sarah finds herself in Kingsmouth, a secluded fishing town whose denizens are suffering from a curse that is slowly turning them into sea monsters.
Will Sarah succeed in breaking the curse and saving the denizens of Kingsmouth from a fate worse than death? Will she find enough courage to traverse the haunted cemetery of ships, where she must ultimately face the archaic beasts and their commander, the corrupt Mayor Murray?