She, the fourth young lady of the Shangshu Mansion, is willful but lovely. She tries to escape from marriage at all costs, but unexpectedly encounters him. The emperor who is out of the palace for inspection is accidentally sent to the palace to become his empress. Unwilling to be trapped like this for a lifetime, she tries every possible means to leave, only to find that she has fallen in love with this arrogant and a little pitiful king. Will she choose freedom or the passionate king? What will he do when the world and beauty are in front of him?