Cinderella at 2 AM

Ha Yun-seo learned that Seo Ju-won, her lover for three years, is the youngest son of a rich family. Ha Yun-seo receives money in exchange for breaking up with Ju-won. And although she did all things to make him break up with her, Ju-won didn't stop pursuing her and still tried to change Yun-seo's mind...