As the patient's lung condition deteriorates due to tuberculosis, Teacher Kim opens the trauma centre operating room for Ri Bok-young's surgery.

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

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.