Twelve-year-old Rae is content as the adopted daughter of shepherds, helping with the flock and reveling in the beauty of her family's hillside farm. But after a frightening encounter with a wolf -- to whom she feels a sudden, peculiar connection -- Rae realizes there is much more to her past, and her future, than she could have imagined. Meanwhile, a young girl named Alba goes about her days as an oracle's apprentice, a duty that confines her to a distant, watery cave. But when she bestows a troubling prophecy on the rising boy-king, her words unintentionally begin a reign of terror, and send Alba on a desperate mission alongside Rae and the wolf.