When a disgraced prince is exiled to a brutal fate, a devoted disciple secretly disguises herself as a lowly maid to protect him, shielding him from danger again and again at tremendous personal cost. After risking her life to help him reclaim his throne, credit for her sacrifice is stolen by another woman who is rewarded in her place, while she receives nothing but quiet suffering. Only when it's far too late does he uncover the truth about who truly saved him.