You will never know that one day you fall in love with someone, the other person is your advesary. The popular psychatrist and former surgeon, Viona de Luna have tons of restriction to search for her partner. She has an agrophobia, hate being fat, hate being dark, and most importanly she is what you called psychopath. The image of Psychopath so bad in public because the image hollywood imprint of common people is a psychopath behind the bar not the opposite. Another reason she is a killer. On the other side Tristan Solar is suave police man like have personality like a sun on the outside but still unapproachable. Seeking a female partner just like a tressure until he met Viona, sense a loneliness in her thinking that they are the same. Viona: "you will disappointed when you know who I'am!!" Tristan: "No, I wont" thinking it just a reason to reject him.