An ordinary girl inexplicably travels to ancient times and becomes Jing Yan, an imperial concubine. Jing Yan remembers scenes of being humiliated and persecuted in the harem, and resolves to stand up for herself. During this time, Jing Yan gains the affection of The Emperor and The Third Prince. However, the power struggles and intrigues in the harem gradually transform the originally naive Jing Yan into the mistress of the harem.