Blood

We find out what prompted Park Ji Sang's, a vampire, decision to become a doctor

Park Ji Sang starts a new job and immediately bumps heads with one of his subordinates, Dr. Yoo Ri Ta.

The fighting with his colleagues take a back seat when Ji Sang realizes someone knows all about him and his secret.

Ji Sang's skills are unquestioned but his bedside manner needs to improving. There seems to be a connection between the the people following Ji Sang and his mother's death

Ji Sang grows worried that the effects of his medication are beginning to wane. The New Drug Development Team is brought onboard, much to the hospital staff's annoyance

As the New Drug Development Team's intentions are questioned at the hospital, Ji Sang and Ri Ta attend a seminar in Jeju Island together and learn more of Ji Sang's past