It's only after time passes that seemingly minor moments in life start taking on greater meaning. Yun-wan gets his way -- and orders Doldam's closure.

Teacher Kim takes the staff to Seoul. Yun-wan won't let his old rival have the spotlight. Bu Yong-ju is hurt but stands by romance and his principles.

During his trip to the main hospital, Teacher Kim leaves an impression — especially on three young doctors who find themselves in his hospital lobby.

Teacher Kim shocks Seo U-jin with his unconventional approach to saving a high-ranking official, and bans Cha Eun-jae from assisting his surgeries.

New doctors get a taste of their first Friday at Doldam Hospital. U-jin refuses to treat a patient who triggers his childhood trauma.

Even in her final moments, a paramedic helps save another's life. U-jin shows Eun-jae his way of resetting the mind from worries.

Bae Mun-jeong comes clean to U-jin about the connection between their families. Teacher Kim secures a safe future for Doldam Hospital.

The medical staff of Doldam Hospital fly out in a helicopter to a ship lost out at sea on behalf of Teacher Kim, who is absent on vacation.

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.

A large audience waits outside the operating room -- and not everyone wants the team to prevail. A shifty reporter starts lurking around Doldam.

Yun-wan makes sure that old wounds don't lie dormant. The furtive reporter keeps snooping around. Dong-ju confronts Teacher Kim about the past.

U-jin gets caught in the middle of two feuding teams of doctors when the family of a patient threatens to sue for malpractice.

Teacher Kim leads his team in saving two critical patients at the same time. Eun-jae steps in to protect a woman from her abusive husband.

U-jin looks into diagnoses for Teacher Kim's arm pain. A bus accident conjures up a regretful moment that haunts Min-guk's conscience.

Teacher Kim tasks U-jin with a final assignment. Min-guk performs surgery on a VIP patient despite pushback from Shim Hye-jin.

Do In-beom returns to Doldam Hospital to investigate an unsuccessful surgery. Min-guk decides between his greed and the truth.

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

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.

Patients injured in a residential fire are rushed into the emergency room. Seo U-jin treats the suspected arsonist despite Jang 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.

Wounded soldiers are rushed to Doldam Hospital. A-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.

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.

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