Su Nian, a cultural relic restorer, touched a gilt bronze mirror from the Tang Dynasty and accidentally traveled through time to become a "suspicious thief" in the eyes of Shen Yan, the young minister of Dali Temple. However, in the bronze mirror in the prison cell, he bumped into Lin Xiao, a college student who also failed in time travel and was trapped in modern times - a "mirror mutual aid" across time and space began.
