A historical drama that tells the tragic story of twin sisters born with the intertwined fates of a king and a traitor, and their journey to write a new history. Yi Hyo, the king’s second son, known as Prince Ok Ryeon. Unlike his older brother, the crown prince, Yi Hyo is bold, battle-driven, and deeply skilled in martial arts. From a young age, he proves himself as a formidable warrior, even achieving major battlefield feats in his teens. Though he possesses both intellect and physical prowess, his fierce and combative nature sets him apart within the royal family.