An American nun embarks on a new journey when she joins a remote convent in the Italian countryside. However, her warm welcome quickly turns into a living nightmare when she discovers her new home harbours a sinister secret and unspeakable horrors.

Massimo Sisti is a reputable professional with a nice house, a happy marriage, and two loving daughters, whose life is turned upside down when one day he finds a little girl tied up in his basement.