Nan Si, a beloved imperial concubine of the Wu Dynasty, goes into premature labor amid war and fights for her life. To save her, Emperor Cang Hanyu strikes a deal with the High Priest: he trades their infant daughter Little Phoenix to send Nan Si across to a new realm and break her fatal curse. Reborn in two different lives, they meet again — once as a noble heir and a discarded wife, once as a favored princess and a commoner consort. Amid family schemes and court intrigues, with or without memories of the past, they always hold each other dearest. Side by side, they protect and cherish one another through every trial.