Anna is a fiery tomboy living in ancient Palestine whose androgynous appearance provokes ridicule from the people around her and doubt within her own heart. When tragedy strikes her family, and Anna's father—disguising her as a boy—sells her to a band of shepherds, she is captured by a mystical, secret society of women hiding in the desert. At first Anna is tempted to escape, but she soon finds that the sisterhood's teachings and healing abilities, wrapped in an ancient philosophy they call "The Way," have unleashed an unexpected power within her.
When danger befalls the caves in which the sisters have made their home, Anna embarks on a hazardous mission to preserve the wisdom of her mentors by proclaiming it among ordinary people. Her daring quest and newfound destiny reveal, at last, the full truth of her identity—a shocking revelation that will spark as much controversy as it does celebration..