Cha Jin-man hates that Teacher Kim's methods are deeply rooted into Doldam Hospital and takes everyone except Sun-woong and Dong-hwa to the trauma centre.

Wounded soldiers are rushed to Doldam Hospital. Ah-reum is left alone to tend to the emergency room when rogue patients suddenly cause a scene.

When an old building collapses resulting in several casualties, a disaster medical support team is dispatched to the site.

Doldam Hospital receives news of a second collapse, but the place is still full of injured people. Teacher Kim leaves everything and heads to the scene.

Ko Kyung-sook does not give up the legal battle over her son's death. She proposes a secret deal to bring down Cha Jin-man, but Teacher Kim opposes to it.

Cha Jin-man fails to find the culprit who broke into the director's office. His reputation is further ruined as incidents from his past become known.

Eun-jae performs emergency surgery on a non-trauma patient while she must join another surgery for a patient with multiple trauma.

A fire approaches as if it would devour Doldam Hospital at any moment. Only after evacuating all the patients do the staff realise Teacher Kim was gone.