E1 - Episode 1

Aired: March 12, 2020

Five friends whose friendship goes back to their days in med school are brought back together when a phone call interrupts each of their busy lives.

E2 - Episode 2

Aired: March 19, 2020

For the first time in 20 years, everyone's finally working under the same roof. A patient with a familiar name finds Chae Song-hwa.

E3 - Episode 3

Aired: March 26, 2020

The hospital's med students are inspired by the doctors, who each look after their patients in their own ways. Lee Ik-jun gets a welcome visitor.

E4 - Episode 4

Aired: April 02, 2020

Yang Seok-hyeong's aloofness frustrates someone on his team. Jang Yun-bok and Jang Hong-do witness a surprising side of Song-hwa outside the hospital.

E5 - Episode 5

Aired: April 09, 2020

Jang Gyeo-ul can't get one kind word out of Ahn Jeong-won, who seems especially cold to her. A difficult professor joins the cardiothoracic department.

E6 - Episode 6

Aired: April 16, 2020

Kim Jun-wan waits for a response from Lee Ik-sun, who says she needs some time. Jeong-won breaks painful news to the family of his longtime patient.

E7 - Episode 7

Aired: April 23, 2020

An unforeseen problem just before a surgery forces Jeong-won to make a tough decision. Meanwhile, Jun-wan is put on edge in the operating room.

E8 - Episode 8

Aired: April 30, 2020

Distracted by a problem in his personal life, Do Jae-hak struggles to get through the day. Meanwhile, Chu Min-ha finds herself drowning in work.

E9 - Episode 9

Aired: May 07, 2020

An urgent call sends Song-hwa rushing to the hospital to tend to a young patient. Ik-jun receives a plea from a desperate father.

E10 - Episode 10

Aired: May 14, 2020

Put in a stressful situation, Jae-hak looks to Jun-wan for advice on the right thing to do. Ik-jun accidentally uncovers an extraordinary secret.

E11 - Episode 11

Aired: May 21, 2020

Ik-jun handles a sensitive request from the troubled wife of a patient. A sudden piece of news threatens Seok-hyeong's peace.

E12 - Episode 12

Aired: May 28, 2020

As doctors and as humans, the five friends each face a maze of life's questions and decisions as they figure out their next steps.