You promised to marry me when we grow up. But you forgot and broke the promise you made, after you met that woman, Hae Soo, the girl who also destroyed my brother's future. Although in the end I got you, but not your heart. . . . Yeon Hwa / Empress Daemok is a cruel and ambitious woman, justifies any means to get what she wants. Despite everything, she was still unhappy, feeling lonely and lacking affection, because Wang So's heart (King Gwangjong) was only for Hae Soo. Can Yeon Hwa have Wang So's heart completely?