On a stormy night, city office worker Yang Rongrong unexpectedly transmigrates through time and becomes a "returned soul" whose face is identical to that of the late Crown Princess Pei Jingshu. Forced into the whirlpool of palace intrigue, she is protected by the devoted Crown Prince Li Rongheng, and gradually uncovers the conspiracy behind Consort Pei's death. As modern thinking collides with ancient political schemes, she must navigate poisoning plots and attacks by political rivals. Yet the mystery of the moon's phases offers a glimpse of the truth behind her transmigration: the fates of two worlds rest in her hands. Torn between love and the road home, can she solve the mystery of time and space and make a choice she will not regret on the next full moon night?
