Duke Barron, the Blood Lion Duke, survives a politically motivated assassination arranged by the king and falls over a cliff, suffering complete amnesia. Found and saved by young peasant girl Serafina, he takes the name Johnny and works as a crippled stable hand at House Linster, regarding Serafina as his own daughter. Years later, conflicts break out at the castle: arrogant heir Julian humiliates Johnny and threatens Serafina. Johnny accepts a duel against Julian to defend his daughter. His long dormant knight talents surface in combat, confusing Julian. Misunderstanding over Barron’s star shaped pendant leads to severe torture and their expulsion from the castle. Alicia and Vivian later realize Johnny is the missing duke. The king’s Shadow Guard tracks Barron down and burns their cottage. Regaining fragments of his memory, Barron learns the royal force marches toward Linster Castle to massacre his blood relatives. Torn apart, he must choose between rescuing his biological family or escaping to safety with Serafina, the girl who gave him a second life.
