The Eternal Daughter follows an artist named Claire and her mother, Maggie, as they return to their former family home, which has been transformed into a hotel. As they settle into the hotel, strange things begin to happen and they start to discover secrets from their past that have been buried for years.
Claire, who is struggling with writer's block, begins to explore the hotel and its surroundings, seeking inspiration for her art. She meets a young man named Max, who is also staying at the hotel, and they strike up a friendship. As they spend time together, they begin to uncover the dark history of the hotel and the family that used to live there.
Meanwhile, Maggie is haunted by her own memories of the house and the secrets she has kept hidden for years. As Claire and Max dig deeper, they discover that the hotel is built on top of an ancient burial ground and that the spirits of the past are still present in the house.
As tensions rise and the hotel becomes more and more dangerous, Claire and Maggie must confront their past and find a way to escape before it's too late. Will they be able to overcome their demons and find a way to heal the wounds of the past, or will they become trapped in the hotel forever, haunted by their own ghosts?