On their wedding day, an imperial edict canceling the marriage crushed Su Li's dream of being a princess. In the room full of ridicule, the powerful regent Mo Hanxuan said loudly: "Miss Su, are you willing to marry me?" In exchange for a red dot, she went from an abandoned concubine despised by everyone to a powerful regent. The palace is deserted, with a naughty cousin looking for trouble. Rumors in the capital are coming one after another, and the prince is pressing closer and closer, hiding murderous intent. Su Li uses tenacity as a blade and wisdom as a shield to navigate the turbulent court and harem. But the regent, who initially only wanted to check and balance the prince, became sincere in the process of protecting her and overcoming the crisis together. When the prince's vicious plot to frame him for rebellion came to light, Su Li stepped forward resolutely and vowed to join hands with Mo Hanxuan to tear apart the veil of conspiracy and reverse the course of events. This marriage, which began with profit, will eventually help her embark on the counterattack path of abandoning a concubine and becoming a queen, blooming with the most passionate affection.