Jin Hwayoung is the only daughter of Jin Jaehyuk, CEO and owner of Jin Industries. The one word used to describe her would be, in simplest terms: princess. Anything you could possibly imagine is hers, thanks to her father's influence and money, of course. Yet, she remains naive to the truth of the real world, shielded from the harshness by her parents. Oh Sehun, on the other hand, lives a rebellious life. As the heir of Oh Corporations, he has a lot of burden on his shoulders. Yet, he brushes it all off in exchange for a nightlife lifestyle. He knows all too well about how no one is truly your friend except for yourself. After a scandal threatens to crash Oh Corporations' stocks, Sehun's father forces him to fix his playboy act by arranging a marriage between them. Their lives are inevitably entangled, now until forever.