The young woman, named Madison, initially falls in love with her boyfriend, Jack, and enjoys spending time with his family who live in a lavish mansion. However, as she spends more time with them, she starts to sense that something is off. She discovers that the family had a daughter who died years ago, and they have been searching for a replacement ever since.
Madison soon realizes that the family intends to drug her and manipulate her into assuming their dead daughter's identity. She tries to leave, but the family goes to great lengths to keep her within their grasp. Madison enlists the help of her own family and friends to escape the clutches of the sinister family. However, the Keller family is wealthy and influential, and they have their own connections and resources to track her down.
As Madison fights to escape, she uncovers even darker secrets about the family and their past. She soon realizes that her life is in grave danger if she doesn't get away from them. The movie ends with a dramatic showdown between Madison and the Kellers, as Madison fights for her life and freedom.
