Su Jin, a cultural relic restorer, accidentally traveled through time while repairing a mysterious ancient mirror and became the deposed crown princess of the Zhou Dynasty. The original owner was imprisoned in the cold palace for murdering the prince's beloved concubine and faced the danger of execution. With modern knowledge and understanding of ancient relics, Su Jin not only resolved the life and death crisis, but also discovered that this bronze mirror was related to the legendary "Yin and Yang Mirror" and may hide the secret of traveling through time and space.
In their dealings with Prince Xiao Jingheng, the two went from being suspicious of each other to working together to investigate the mystery behind the bronze mirror. However, the undercurrent in the court, the pursuit of the mysterious organization "Xuanying Pavilion", the complex interpersonal relationships left behind by the original owner, and the emerging emotions all made Su Jin make a difficult choice between "staying" and "returning". When the truth gradually emerges, she must decide: should she return to a stable life in modern times, or stay in ancient times and rewrite history?
