This drama tells the story of a Vampire, Park Ji Sang (Ahn Jae Hyun) who works as a doctor in a hospital.
Meanwhile, Yoo Ri Ta (Koo Hye Sun) plays 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 used to being the golden girl. Lee Jae Wook (Ji Jin Hee) co-stars as their chief, an outwardly gentle, inwardly ambitious man who will prove to be their biggest adversary.