Lucian, a former mercenary, wears men's clothes in order to be Third Prince Noi's personal servant. Betrayed by her comrades, however, she's given to Renaldo, ruler of the Vales Empire, in exchange for Prince Noi's freedom. "I'm your first, aren't I?" Lucian inquires. While the two enemies bicker constantly, Lucian can't comprehend why he lies with her just as he would a lover. With neither of them willing to be honest about their feelings, what does fate have in store for the star-crossed lonely emperor and his beloved hostage?!