Lee Beon creates a perfect romantic day for Seon Chaek, proving their love can overcome any obstacle thrown their way. Their fairytale moment is destroyed by the arrival of Lee Gyu, a charismatic stranger who claims a prior right to Seon Chaek's hand. He built a perfect world for her, only for another man to tear it down.

While sharing a moment of affection with Lee Beon, Seon Chaek is caught by her father and is promptly grounded. Meanwhile, the King grows suspicious of Lee Gyu's sudden return to Hanyang. Meanwhile, Bun makes every effort to earn the favour of Seon Chaek's family. Beon's first target is Seon Chaek's brothers.

Yi Beon's desperate rescue of Seon Chaek should bring them closer, but a new mystery tears them apart. When the kidnapper's body appears in public, Seon Chaek confronts a horrifying truth about the man she loves. She is safe in his arms, but she may be in love with a monster.