He is a well-known diamond king. He changes women like clothes, but he is as ruthless as his name. But he only hides a woman named Ye Youran in his heart. He meets Ye Youran again, but due to various misunderstandings, the two become a debtor. Ye Youran is forced to stay with ruthless, but both of them are stubborn and refuse to reveal their feelings. They entangle each other, but they get deeper and deeper into each other.
