The Unmatched Lady

At her banquet, Clara, the Marquis's daughter, discovers her fiancé Preston having an affair with a maid. She rejects the marriage. Leveraging her network, she takes down Preston and the maid. She thwarts powers, including Duke An'guo and the Crown Prince. She saves a prince, quells a war, and stabilizes the court, becoming the Lady of Changping. Rejecting the Empress title to control her own destiny.