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

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.

Patients rush into the emergency room while the staff tends to surgeries. Doldam Hospital falls into chaos as the gunman’s identity is revealed.

Patients injured in a residential fire are rushed into the emergency room. Woo-jin treats the suspected arsonist despite Dong-hwa’s criticism.

The trauma centre loses a patient and receives another patient in critical condition. Meanwhile, a child visits Teacher Kim at Doldam Hospital.

Doldam Hospital hires new personnel. The people of Doldam, who thought Teacher Kim would be the new head of the trauma centre, hold an emergency meeting.