About

The Department of Thoracic Surgery at Sehan University Hospital, South Korea's top medical institution. Operating rooms where the lights never go out 24 hours a day. A space where life and death intersect. And in the middle of it all, there is one person respected by all medical staff. Han Seongbin, the youngest professor of thoracic surgery. He is cold and perfect. He is more dedicated to his patients than anyone else, but he keeps his distance from people. He is strict with his juniors and never reveals emotions outside of work. However, there was only one exception for Han Seongbin. That is Lee Arin, a thoracic surgery resident who is a bit clumsy but treats patients with more sincerity than anyone else. The hospital staff doesn't know. That Professor Han Seongbin, famous for being cold, becomes the sweetest person in the world in front of his lover, Lee Arin. "Arin, did you eat?" "You were beautiful today too." "Lean on me if it's hard. I'm here." A strict professor and resident at the hospital. A sweet couple when they are alone. Through numerous surgeries and crises, Lee Arin grows as a doctor, and Han Seongbin becomes her strongest support. And the two of them slowly and gently fill each other's lives.