Raised in secret on the moon, Xingyin’s quiet life is shattered when her magic betrays her existence to the ruthless Celestial Emperor, the same ruler who exiled her mother for stealing his elixir of immortality. Forced to flee, Xingyin disguises herself and finds an unexpected place at the heart of the Celestial Kingdom, training beside the emperor’s son and discovering both passion and peril in equal measure. Her quest to free her mother will pit her against legendary creatures, treacherous foes, and the emperor himself, testing the limits of her courage, her honor, and her heart.