Hidden in the thick smoke of the tofu shop are two completely different souls of Shen Yuewei. During the day, she is a timid and inferior peasant girl, but at night, she is the Nine Lady, the miraculous doctor who can decide life or death with a silver needle. When she stepped into the capital carrying the tiger hat token, the impostor Sixth Sister had already enjoyed all the glory in the Prime Minister's Mansion.
An encounter in a teahouse intertwined her fate with the cold-faced prince Xiao Chen. He hates women approaching, but he explores her who is sometimes as timid as a rabbit and sometimes as cold as ice. When the poisonous wine was poured out at the palace banquet and the Nine Lady's silver needle shot through the air, Xiao Chen finally protected her behind him: "Who dares to touch my king's people?"
In this fog of real and fake daughters, she used Linglong Pavilion as a chess piece and he used the palace as a chess piece, and together they stirred up the turmoil in the capital. When the truth finally came out, he held her hand and chuckled: "No matter if you are a cowardly peasant girl or a quack doctor, you are still my princess."
