As Doldam Hospital suffers from a lack of doctors, Master Kim visits the main hospital to ask to send young doctors to him and runs into CS fellow Cha Eunjae and GS fellow Seo Woojin. Woojin is ostracized by other doctors because he had done whistleblowing on other doctors' corruption and malpractice. On the other hand, Eunjae always takes a tranquilizer before operations due to her operation fright.

Master Kim gets disappointed at Woojin and tells him to go back. But Woojin asks Master Kim for one more chance and Master Kim gives Woojin a week of grace period to prove himself. Meanwhile, an important figure comes into the emergency room of Doldam Hospital. Do Yoonwan, the chairman of the Geosan University Foundation figures out the news and begins to work out his scheme.

Master Kim chooses the extreme method to save Minister Ryu. After Master Kim manages to bring Minister Ryu back to life, Park Mingook starts doubting on Master Kim’s real intention and skills. After Mingook announces the Minister’s condition to press, Master Kim just doesn’t seem to care. Eunjae asks Woojin to attend the second surgery, but he refuses.

Mingook asks Woojin questions about the primary surgery that Master Kim operated, and Woojin hesitates to answer them. The director of Doldam Hospital comes back to the hospital and Yoon Ahreum greets him. Eunjae gets furious on Woojin for taking away her opportunity to be in the second operation with Mingook. And Doldam Hospital is on the verge of being sued for malpractice.

Friday is the busiest day as a lot of patients swarm in Doldam Hospital. Eunjae still finds it hard to perform surgical operations herself. A girl patient who suffers from drug poisoning because of her father's joint family suicidal attempt reminds Woojin of a painful memory from his childhood. And the staff of Doldam Hospital resents after hearing a rumor that there will be a new director.

Master Kim leads his team in saving two critical patients at the same time. Eunjae steps in to protect a woman from her abusive husband.

Mingook becomes determined to turn people away from Master Kim. A situation Eunjae tries to mitigate takes a turn for the worse.

Even in her final moments, a paramedic saves another's life. Woojin shows Eunjae his way of resetting the mind from worries.

Woojin looks into diagnoses for Master Kim's arm pain. A bus accident conjures up a regretful moment that haunts Mingook's conscience.

Ahreum protects a patient's rapekit from failing into wrong hands. Mingook finally brings up the bus accident from 11 years ago to Master Kim.

Mingook asserts his authority by restructuring the hospital staff. Woojin is stunned to learn which surgeon was behind a faulty operation.

A recruiter with bitter resentment for Woojin tries to tempt staff members to leave Doldam Hospital. Eunjae's mom asks for a favor.

Eunjae panics when she runs out of medication from Master Kim before surgery. Woojin gets coerced into leaving Doldam Hospital.

Master Kim tasks Woojin with a final assignment. Mingook performs surgery on a VIP patient despite pushback from Shim Hyejin.

Do Inbeom returns to Doldam Hospital to investigate an unsuccessful surgery. Mingook decides between his greed and the truth.

Bae Moonjeong comes clean to Woojin about the connection between their families. Master 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 Master Kim, who is absent on vacation.

As the patient's lung condition deteriorates due to tuberculosis, Master Kim opens the trauma centre operating room for Ri Bokyoung's surgery.

Doldam Hospital hires new personnel. The people of Doldam, who thought Master 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 Woojin treats the suspected arsonist despite Jang Donghwa's criticism.

Cha Jinman hates that Master Kim's methods are deeply rooted into Doldam Hospital and takes everyone except Lee Seonwoong and Donghwa to the trauma centre.

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

Wounded soldiers are rushed to Doldam Hospital. Yoon Ahreum 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. Master Kim leaves everything and heads to the scene.

Go Gyeongsook does not give up the legal battle over her son's death. She proposes a secret deal to bring down Jinman, but Master Kim opposes to it.

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

Kang Dongjoo returns to Doldam Hospital, with his unconventional proposals causing a stir in the trauma centre.

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

People injured from a forest fire rush into Doldam Hospital. Yet, the trauma centre is empty due to the staff staging a boycott against Dongjoo.

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