In the Middle Ages, Federico, a soldier, visits the convent in Bobbio, where Sister Benedetta is facing charges of witchery for seducing Fabrizio, Federico’s twin brother, and making him betray his priestly mission. Federico hopes to secure his brother a burial on consecrated grounds. In modern times, Federico Mai, a Minister inspector, knocks on the doors of the very same convent, in order to broker a sale of the property to a Russian millionaire. Unbeknownst to him, a mysterious "Count" lives there.