The writer Christine de Pizan (1364-1430) prevails against all odds after the death of her beloved husband, to whom she has sworn eternal fidelity: against the misogyny of the church, against deceitful lawyers and violent admirers. But then she meets the young Franciscan friar Thomas, with whom she soon has more in common than their work together and the investigation of a mysterious death, which also reveals Brother Thomas's true past along winding paths -