Monsters and humans have been enemies for centuries. So what happens when a legendary hunter family's neglected son and the princess of werewolves fall deeply in love? Hunter Rayden Kerolym and werewolf Lyonnel Siverov have quite a complicated relationship going way back. What will happen when they both later find out that their younger siblings have fallen in love with each other? What will happen to the forbidden love and secret relationship in the midst of bloodbath?