A young family moves into an old house in New England, seeking a fresh start and hoping to leave their troubled past behind. Norman, the father, is a professor who has taken up research left unfinished by a colleague who committed suicide under mysterious circumstances. Lucy, his wife, is supportive but struggles with an eerie feeling about the house. Their son, Bob, begins to see strange images of a girl warning him away from the property before they even arrive.

As they settle in, the family quickly becomes aware of a sinister presence within the home. The locals are tight-lipped, but it becomes clear that the house has a gruesome history that the townspeople are reluctant to speak of. Meanwhile, Bob befriends the elusive girl he saw in his visions, who seems to hold secrets about the malevolent force lurking in the basement. She provides cryptic warnings and guidance that suggest the danger is rooted deep within the house's foundation. Norman dives deeper into his research, uncovering unsettling details about his predecessor’s work and his fascination with the house, which only intensifies the sense of dread pervading their new home.