When did this happen? In the Joseon Dynasty, Kim Min-Jae (Shin Ha-Kyun) is the most important person in the army. His first love is a risk he takes for that woman. Yang Hyuk is the King's son. During the Joseon Dynasty, he helped his father set things up, but he wasn't chosen as the Crown Prince. He still wants to be King one day. KING: Jin is the son of Kim Min-Jae. Jin is the King's son-in-law. Because he is the King's son-in-law, he can't do anything about politics and only wants to have fun.