In the fictional Zhou Dynasty, the situation in the court is turbulent. The fourth prince Yanling is regarded as useless because his biological mother died early and he has a "hidden illness" (actually a disguise), but in fact he is secretly planning it. The heroine is the HR director of a modern Fortune 500 company and is proficient in talent assessment, performance appraisal and crisis public relations. After traveling through time, she became the personal maid of the prime minister's concubine and was forced to marry her. The male protagonist, Prince Zhou Zhou, appears to be dissolute, violent and bloodthirsty, but in reality he is deeply scheming and is clearing out hostile informants in the palace.