The student Christina travels from her boarding school in London to the castle of her family in Montserrat for the reading of the will of her father Ernesto that she has never known and recently committed suicide. On the arrival, she spends the night in an inn and the owner tells that nobody lives at the castle. On the next morning, she is taken to the castle by the mute servant, where she meets her weird Uncle Howard, his wife Abigail and his daughter Carmencé and Linda, a blind girl. They tell that her stepmother Herminia is on the deathbed. When she visits Hermínia, she tells her to leave the castle and dies. She starts entwining daydreams and nightmares with reality. When the will is read, she inherits the mansion. She asks them all to remain there and live with her because she is lonely. When she has an encounter with the spirit of her deceased father, he tries to warn her to leave that place that is evil, but it is too late.