After a divorce, Sophia moves to the south of Italy with her daughter, Helena. The new house, located inside an austere building of the fascist age, hides a mysterious closet and dark secret. After the loss of Helena's first baby tooth, a nightmare begins that could only come from darkness. This is the tale of a mysterious woman: an angel or a witch, a little girl, charmed by the arrival of the "Fairy of the teeth," and her mother. Powerless before the transformation of an innocent children's tale into a nightmare coming from afar, HAUNTING OF HELENA does not descend into a splatter film, but rather slides along the sharp blade of psychological fiction.