One day, the female lead wakes up as Rosaline, a character from an erotic novel. Surprisingly, Rosaline is... the tutor who is killed after failing to trigger the awakening in Theodor, the terminally ill, obsessive tyrant! The key to solving his problem lies in evoking intense emotions through lovemaking! As a former personal trainer, Rosaline tries to initiate the awakening by non-sexual means. And for her own survival, she accomplishes her mission and makes him healthy, but... something peculiar unfolds. "Your Highness... You have become too healthy..."