Hospital Playlist follows the lives of five doctors in their forties, Lee Ik-jun (Jo Jung-suk), Ahn Jeong-won (Yoo Yeon-seok), Kim Jun-wan (Jung Kyung-ho), Yang Seok-hyeong (Kim Dae-myung) and Chae Song-hwa (Jeon Mi-do), working at the Yulje Medical Centre, who first became friends during medical school. Lee Ik-jun is an assistant professor of general surgery specializing in liver transplants and a single father to his only son Woo-joo (Kim Joon) after getting divorced from his absent wife. His cheerful charisma allows him to connect with both patients and doctors, making him a popular figure in the hospital. A devout Catholic, Ahn Jeong-won is the son of the founder of the hospital and an assistant professor of pediatric surgery, cherished by his patients for his caring and sensible personality. However, seeing his patients suffer causes him distress, so he is secretly planning to become a priest against the wishes of his mother, Jung Ro-sa (Kim Hae-sook). Kim Jun-wan is an associate professor and later head of the cardiothoracic surgery department at Yulje, admired and feared by his subordinates due to his exceptional surgical skills and his cold demeanor. He has known Ik-jun and his family, including his lively sister Ik-sun (Kwak Sun-young), since childhood. Yang Seok-hyeong is an assistant professor of obstetrics and gynaecology perceived as aloof and sometimes detached due to his introverted personality, but he is in reality attentive and understanding toward his patients. He is divorced and has a complicated family history, but deeply cares about his mother. The only woman in the group of friends, Chae Song-hwa, is an associate professor of neurosurgery, considered as the perfect doctor by her colleagues and patients alike thanks to her brilliant career, accommodating disposition and bright personality.
