Shen Qingli, a modern restorer of traditional Chinese paintings, transmigrates into the Great Zhou dynasty after an accident at a museum. She becomes the daughter of a low-ranking civil official and is about to enter the palace for the selection of consorts. Because she bears a striking resemblance to Emperor Bai Yichen’s late beloved, Murong Wan, a former dynasty’s princess who died three years earlier, he chooses her at first sight. On their wedding night, she accidentally catches him speaking to someone who should be dead and realizes she is only a stand-in. An intense push and pull, shifting from hatred to love, unfolds alongside the treacherous struggles of the former dynasty and the imperial harem, as well as a shocking secret buried deep beneath the palace walls.