A story about Boo Yong-joo (Han Suk-kyu), a triple-board certified surgeon, who was once at the top of his field and used to work at Seoul’s top medical center, Geosan University Hospital. After a traumatic incident, he disappears and changes his name to Kim Sa-bu. He begins working at a small hospital named Doldam, located in Gangwon Province. He guides Kang Dong-joo (Yoo Yeon-seok) and Yoon Seo-jeong (Seo Hyun-jin) to become great doctors by teaching them to fight against power and money for the sake of patients.