D-Day (2015)

A massive 6.5-magnitude earthquake devastates Seoul, blocking emergency aid and plunging the city into chaos. Amid the disaster, skilled surgeon Hae Sung risks everything to treat the injured, earning backlash from his profit-driven hospital. Ambitious doctor Ddol Mi and rising star Woo Jin are inspired by Hae Sung’s selfless actions, and together, the trio throws themselves into life-threatening situations, determined to save lives and rediscover what it means to be true doctors. (Source: MyDramaList)