Chou Tzuyu is one of the most ruthless mafias of Korea. His name is feared all over Korea. The way people fear him and the way he has his empire spread all over makes him ruthless. He is know to be heartless monster famous for his ways of torture. Minatozaki Sana is a simple bartender in. She is really beautiful. She is a bartender at night and a store-worker by day. She works hard to earn and to survive. What happens when she crosses path with this monster. Everything about him screams danger to her and so she tries to run but he has no intentions of letting her go. Not now. Not Ever. He wants Sana for himself. Because after all these years he might have a heart which has started beating for her. But he knows he is not good enough for her.... But then Sana also falls for him and together they face their biggest enemies. Their past Demons.