Baek Gang-hyeok is a brilliant trauma surgeon who has performed surgeries in various conflict zones around the world. He is confident in his abilities and has a bulldozer-like personality when he believes he is doing the right thing. He starts working at a university hospital. In addition to Baek Gang-hyeok, the severe trauma team consisted of Yang Jae-wen Chi, nurse Chin Jang-mi, and resident anesthesiologist Park Kyung-wi. Yang Jae-wan previously worked as a member of the pre-operative surgery department. This starts with u walking to the trauma center.