Sometimes the most divine interventions come when you're ´nun´ the wiser Benvenuto a Santa Caterina, a picturesque Tuscan village where the abbey bells usually chime at noon. But today, Sister Isabella finds the silence unsettling. When she discovers Sister Raffaella lifeless in the cloister, a fall from the belfry seems likely, but a cryptic number near the body hints at something more sinister… Mother Superior insists it's an accident, but Isabella suspects foul play.