Irene has served as the acting queen for two decades, managing the nation's political landscape alone while her husband, King William, fought in the war. Just as she brings an end to the long conflict and prepares to transfer all administrative responsibilities back to the returning king to finally enjoy a well-deserved break, she unexpectedly awakens in an unfamiliar bed. Upon glancing in the mirror, she is startled to see herself twenty years younger, transported back to the day prior to the tea party when she was selected as the fiancée of the crown prince. Shocked and enraged, she discovers that the twenty years she dedicated to the country have been erased. Understanding that she has been ensnared in someone else's regression, she resolves to alter her path in this new life. Declining to accept the role of the crown prince's wife, she aims to pursue a life of relaxation. However, her cherished younger sister is appointed as the new crown princess in her stead, paving the way for an unforeseen future.