 In 1856, fresh from life with nuns in an orphanage school, Alexina Barbin comes to a coastal village in La Rochelle to teach the village girls. She is deeply religious. She shares the classroom and a bedroom with the young and vivacious Sara, with whom she falls in love. Alexina has another secret: her gender is mysterious. She and Sara begin a scandalous love affair, but Alexina seeks marriage and social acceptance. She discloses her secrets to the village priest, to her mother, to the bishop, and to the bishop s physician. After the church and court rule on her petition, marriage to Sara becomes Alexina s sole purpose and hope.