The grievances of the previous generation forced Zhang Xiaoyu to conceal her gender and become an emperor, but Huang Xiyuan, whom she favored in the draft, discovered this secret. Fortunately, Huang Xiyuan also treated her sincerely. Not only did he have to be on guard against other people's assassinations, but he also had to help Zhang Xiaoyu conceal his identity at all times. Living in the harem, in this dilemma, how would Huang Xiyuan escape from danger again and again? Can there be a perfect ending with the emperor?