Im Yoona, a young and poor girl, who lived a miserable life. She got hired as Kim Taehyung's personal assistant. Who's Kim Taehyung? The only son, the heir, to the biggest and most powerful company in South Korea. Even government officials have to look up to them. Love? More like a game to the rich young man. Girls? They're objects for him. But will things change after he met Im Yoona? Will he realize the value of true love? Just when things were going well, a love triangle formed...