The heroine and her twin sisters alternately play the role of "prime minister", with one person in charge of managing politics during the day and the other in charge of investigating crimes at night. They discovered that the cause of the late emperor's death was related to the Queen Mother, and the Queen Mother seemed to know the secret of the twins. The younger sister falls in love with an enemy hostage, the older sister is proposed by the prince, and her identity may be exposed at any time. They must make the choice of "two people" under the identity of "one person", and the final truth is: they are actually triplets, and the third person is secretly controlling everything...
