After a divorce, Sophia moves to the south of Italy with her daughter, Helena. Their new home, an apartment within an austere building of the fascist age, is a chance for them to start a new life. But inside an old storage room hides a mysterious closet and a buried secret. After the loss of Helena's first baby tooth, a chilling obsession begins and an apparition haunts her sleep. Dreams become nightmares. Nightmares become reality. When Helena collects her classmate's fallen teeth with an urgent hunger, it is clear that there is far more to their new home than can be seen. Sophia finds herself in a terrifying fight to save her child while maintaining her sanity.