In a sleazy casino full of oil refinery workers, Catherine timidly sits next to her fiance. "Damn it! Take it all!" a man with black hair suddenly screams and starts taking his clothes off. Then her fiance whispers into her ear, "Catherine, it's him." With strong determination, she approaches the man. This is a risky bet, but she has no choice-she needs to win it. "I'll transform him into a perfect gentleman."
Joe comes to love Catherine during his lessons to become a gentleman. She's also started to fall for him in spite of the fact that she's engaged. Suppressing feelings for each other, the two try to manage their lessons. The deadline is nearing... Will Joe be able to act like a gentleman at the party? And what'll become of their love?