At 16, Serafina enters the Ferrara convent of Santa Caterina as its prisoner, screaming like a madwoman. She's one of a nobleman's two daughters, but there is only dowry enough for one suitable marriage. In a time of political and religious ferment her dowry to the convent makes her especially desirable, but she is moreover possessed of a heavenly voice that will add to the lustre of their famous choir. In time, Serafina will, like the rest, accept that convent life is preferable to the brutality of the world outside, and turn to the ideal bridegroom, Christ. What they do not know is that she is already passionately in love.