Lokheun, whose name signifies "joyful dawn," experiences a heart-wrenching twist of fate after losing her mother and having her father on the run seeking vengeance. To rescue her father, Lokheun commits herself to Garyun, a resolute emperor who endeavors to rectify his father's misdeeds. Due to mistaken identity, Lokheun has to endure rigorous martial arts drills that stretch her to her utmost limits. As her connection with Garyun wanes, Lokheun realizes her true desire for the joyous life her name symbolizes.
