This drama tells the story of a vampire, Park Ji-sang who works as a doctor in a hospital. Yoo Ri-ta is a hotshot heiress doctor, a star physician at the hospital and the niece of the board’s chairman. She’s snooty and cold, but highly capable, and accustomed to being the golden girl. Lee Jae-wook is their chief, an outwardly gentle, inwardly ambitious man who will prove to be their biggest adversary.
Park Ji-sang (Ahn Jae-hyun) is a doctor specializing in hepato-pancreato-biliary surgery in the best cancer research hospital in the country. He is also a vampire. Despite seeming cold and unfeeling, Ji-sang masks his soft heart and inner pain and yearns for closeness with people.