1115, Germany. Young Hildegard is sent to the Abbey of St. Disibod in the Rhineland as her parents' gift to the Church in accordance with a custom known as the tithe. Hildegard has a deep love of nature and a knowledge of herbal healing, and she hopes to purse medical studies at St. Disibod. But no sooner does she settle into her new life than she finds out that as a girl she will not be allowed to attend the monastic school or have access to the abbey's library; instead, she must stay at the women's convent.
It might seem that Hildegard's dreams have quickly come to an end. Yet she refuses to be sidelined. Against fierce opposition from Prior Helenger, the hostile head of the monks' cloister, she finds another way to learn-by securing an apprenticeship with Brother Wigbert who runs the infirmary and is in dire need of a capable assistant. Under his supervision, she begins to train as the abbey's first female physician.
When Hildegard's reputation starts to spread throughout the Rhineland, Helenger's persecution escalates as he fears losing control over the women's community. But that is not the only challenge she must grapple with. She has developed feelings for Volmar, a fellow Benedictine novice, that force Hildegard to re-examine the fundamental assumptions she has made about her life.
The year is 1143. Hildegard, already a well-known physician, has expanded her work to writing not just about medicine but on theological matters as well. Once again, the monks of St. Disibod are there to stop her, citing the biblical passages that admonish against 'women teachers.' Also, Abbot Kuno is aging, and it is only a matter of time before he is succeeded in the post by Prior Helenger, who wants nothing more than to see Hildegard permanently relegated to the convent's enclosure.
Leaving St. Disibod is Hildegard's only hope of continuing her mission of healing and writing as she sees fit. She has been saving money from the convent's endowments for years, but in order to establish her own foundation she will need the backing of a powerful man of the Church. There are several who could become her champions-from the famed Abbot Bernard of Clairvaux, to the Archbishop of Mainz, to the newly elected Pope Eugenius III. But will they take up a woman's cause and subvert centuries of established tradition? And will it be enough to protect Hildegard from a betrayal that lurks closer than she could ever imagine?
