Benedetta Carlini (Virginie Efira) enters the convent in Pescia, Tuscany, as a novice in the late 17th century, when the country is ravaged by disease.
Benedetta's impact on communal life is immediate and significant, as she has been capable of performing miracles since she was a child.
Unsettling religious and sensual visions plague a 17th-century nun in Italy.
She is accompanied by a companion, and the two women's friendship blossoms into a romantic love affair.