The heroine Yang Zi gets into a car accident on the way to an appointment after her college entrance examination. She accidentally travels back to the Kangxi period of the Qing Dynasty, and works as a maid in the Babeile Mansion. She develops a fate with the eighth prince, Yinzhen. Later, she enters the palace and gets acquainted with the fourth prince, Yinzhen. During her emotional entanglement with the fourth and eighth princes, she gets involved in a secret war in the harem. Unexpectedly, he accidentally traveled back through time and returned to the Qing Dynasty for the second time, but he became the eighth prince's side friend. The relationship between the three people fell into a more complicated situation...