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.

A British widower in the 1880s Pacific Northwest hires a Native American governess, educated in a Christian mission school, to teach his two daughters. While preparing the eldest for an arranged marriage, a force within her begins to awaken, threatening everything she has been taught.