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.

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.

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