Jeon Jungkook is an ordinary guy who had just graduated from college but he has something billionaire Kim Taehyung wants: the younger is the adoptive father of the heir to Taehyung's principality.Jungkook will do anything to keep his son. Jungkook was then faced with the decision of living with the enemy or never seeing his son.Of course he chose the former because he needed to be with his son. A greater force then threatened to take their joy away for good.Taehyung proposed a marriage of convince.That was the only way that they were going to keep the custody of their baby son.