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.

Do Yun-wan creates chaos by bringing his own team of doctors. U-jin's participation in Park Min-guk's surgery sparks a misunderstanding.

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

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

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.

Min-guk becomes determined to turn people away from Teacher Kim. A situation Eun-jae tries to mitigate takes a turn for the worse.

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.

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.

Yoon A-reum protects a patient's rape kit from falling into wrong hands. Min-guk finally brings up the bus accident from 11 years ago to Teacher Kim.

Min-guk asserts his authority by restructuring the hospital staff. U-jin is stunned to learn which surgeon was behind a faulty operation.

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

Eun-jae panics when she runs out of medication from Teacher Kim before surgery. U-jin gets coerced into leaving Doldam Hospital.

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.

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