12 episodesFirst aired 12 March 2020
E1Mar 20201h 23m
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.
E2Mar 20201h 22m
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.
E3Mar 20201h 28m
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.
E4Apr 20201h 19m
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.
E5Apr 20201h 13m
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.
E6Apr 20201h 22m
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.
E7Apr 20201h 24m
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.
E8Apr 20201h 28m
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.
E9May 20201h 16m
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.
E10May 20201h 32m
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.
E11May 20201h 28m
Ik-jun handles a sensitive request from the troubled wife of a patient. A sudden piece of news threatens Seok-hyeong's peace.
E12May 20201h 53m
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.