Plot synopsis: Actress Li Weiwei time travels to ancient times and takes the place of the silly princess Li Caiwei, who is engaged to Shen Huajin. But on the day before they are scheduled to marry, he's murdered. Suddenly she finds that they are all stuck in a time loop, and so Huajin and Weiwei try to save him and break the time loop by solving who is targeting him and why.