Yonghwa was offered $50 million by his grandfather to get married. He was the one and only heir left and his grandfather was worried that their bloodline will be lost in a matter of years.  Yonghwa has no plans in getting married, but he’s not crazy to let the $50M go, which he won’t be having if he stays single. His dilemma has one solution; Seo Joo Hyun ‘Seohyun’. After he convinced her that they can separate months after they get married, she has agreed. She was excited too, Yonghwa has offered her 10 percent of the fortune he’d get from his Grandfather after their charade. The thing is, they have yet to be married and Seohyun’s heart did a summersault. Now she wanted Yonghwa to be hers to keep.