The princess disappeared mysteriously, causing a turmoil in the palace when she returned. She is the true love of the prince's life, but her repeated evasion is completely different from her past attitude. The prince tells the truth in one sentence and keeps hiding it for her. Living alone in the palace, facing the emperor's constant pressure and the prince's repeated concessions, her childhood sweetheart rescued her in the middle of the night, and her innocent son with the prince was innocent. Faced with various choices, she went on a very bumpy road to revenge. Letting go or holding on to the suffering of the past is nothing more than one's own obsession.