Madeleine and Rick buy their dream house: a majestic, three-story 18th century home in the countryside-and what a bargain! They move in quickly, along with their children, Cynthia and Tim. Madeleine wallows in the newfound joy of her beautiful estate and sets about making it feel like home.
Cynthia's nightmares begin soon after. She rarely remembers much about them other than water. She often wakes up screaming: "Get out! Get out!" She tells her mother about the funny-looking people in her dreams. Then, Tim begins acting strangely, as well, and Madeleine encounters a strange fog and the disappearance of personal belongings.
The house came fully furnished, which included letters written in the 1800s-letters that speak of longing and love for someone called Emily. Madeleine hopes to uncover the mystery of the letters, but the deeper she digs, the more fearsome her dream home becomes. Her family is not alone within its walls, and whatever shares the space with them wants them gone-at any cost.