Once the daughter of a powerful noble, Hwi-yeon now lives as the daughter of a traitor. To survive, she disguises herself as a man and lives a quiet life in hiding. Her concealment seems to go smoothly. Until… "What's gotten into you, my lord?!" "You really do not know why?" "I don't know. I'm not interested in such...perversions. Please let me go." "What a pity...because I am very interested in these things you claim to have no interest in." Everything changes when she accidentally encounters Prince Cheong-wun, the beautiful libertine of the Kingdom of Geumyul and her former betrothed. As old desires resurface and new dangers arise, Hwi-yeon must navigate a perilous game of deception and passion, where the stakes are nothing less than her very survival. Will she be able to keep her true identity hidden, or will her disguised desires lead to her undoing?