“You will become my younger sibling’s blood bag, and your blood will be drawn until the day you breathe your last.” Mido is kidnapped to serve as a blood donor for a young master suffering from a rare condition. Bracing herself for a life of violation and suffering, she is instead met with a man who appears beautiful, gentle, and harmless. “Mido, you are my only hope. I will treat you well, so would you like to stay by my side?” As Mido remains beside Baekgyung while searching for a chance to escape, the man behind the gentle façade begins to slowly and cunningly break down her defenses. Alarmed by her growing willingness to stay with someone she knows she should hate, Mido begins to push him away. “An attitude befitting of our relationship. If that’s what you truly want, I can act like a kidnapper again.” A fierce battle of wills unfolds between one who clings and one who longs to be free. An unexpected incident leads Baekgyung to taste Mido’s blood, awakening a violent surge of the instability he had long suppressed. “In cases of extreme compatibility, did you know bodily fluids can have an aphrodisiac effect?” “Aphrodisiac effect?” “It means that whether it’s your saliva or your body, it affects me the same way your blood does.” As their relationship takes an unexpected turn, Baekgyung’s obsession with Mido ignites. Yet Mido has her own reason for needing to return… “I was going to be angry, just this once… but I can’t. How could I be angry when you make me feel like this?” Will Mido ever be able to escape from this beautiful madman?