Golden Time (Korean: 골든타임; RR: Goldeuntaim) is a 2012 South Korean medical drama starring Lee Sun-kyun, Hwang Jung-eum, Lee Sung-min and Song Seon-mi. It aired on MBC from July 9 to September 25, 2012 on Mondays and Tuesdays at 21:55 for 23 episodes. In emergency medicine, "golden time" or "golden hour" refers to the crucial time period right after a patient suffers a traumatic injury, during which timely medical treatment could determine life or death. After spending two years teaching in the country, Lee Min-woo (Lee Sun-kyun) returns to a city hospital to complete his residency and face his own uncertainties about being a doctor. Free-spirited and goofy, he is jaded about his job and just wants it easy. He is then jolted out of apathy when a traumatic incident forces him to rethink why he wanted to be a doctor in the first place. First-year resident Kang Jae-in (Hwang Jung-eum) comes from a rich family that owns hospitals, but she just simply wants to be a doctor who can support herself and help others. Both Min-woo and Jae-in work in ER under the guidance of Choi In-hyuk (Lee Sung-min), a famously astute workaholic surgeon who puts his patients before himself.