I, an orphan girl from a peasant family who was sold into the palace by my adoptive parents to "bring happiness" to the sick prince, thought that what awaited me would be endless bullying and contempt. However, in this palace as deep as the sea, I began to pretend to be a pig and eat the tiger, relying on the knowledge of herbal medicine I learned from the Taoist temple and my cooking skills that can turn decay into magic. I cured the prince's "illness", defeated the scheming green tea concubine, slapped the bully slave, and gracefully slapped me in the face despite repeated provocations from the noble ladies of the capital. The prince, who was rumored to be as gentle as jade but was actually violent and cruel, gradually opened his heart to me from his initial indifferent temptation to his overbearing protection. When the battle for the throne swept across the palace, I used my humble identity to deal with all the forces and clear obstacles for him. Finally, I joined hands with him, and from a happy peasant girl, I counterattacked step by step to become the mistress of this power.