Su Waner once worked as a maid in the Prime Minister's Mansion with her mother. Lin Yutang, the daughter of the Prime Minister's Mansion, was arrogant and domineering and took human life seriously. On a whim, she shot Su Waner's mother to death.Twelve years later, in order to seek justice for her mother, Su Waner changed her face to Lin Yutang's and became Lin Yutang's stand-in, maintaining the persona of "the most talented woman in the world" for Lin Yutang in order to seek the position of crown princess.

On the wedding day, Su Waner was no longer humble and refused to change her identity.Su Waner and Lin Yutang confronted the prince, and the prince asked Lin Yutang's mother to identify them. Under Su Waner's warning, Lin Yutang's mother sided with Su Waner for the sake of the prime minister's house.