Every day is extraordinary for five doctors and their patients inside a hospital, where birth, death and everything in between coexist.
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.
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.
The hospital's med students are inspired by the doctors, who each look after their patients in their own ways. Lee Ik Joon gets a welcome visitor.
Yang Suk Hyung's aloofness frustrates someone on his team. Jang Yoon Bok and Jang Hong Do witness a surprising side of Song Hwa outside the hospital.
Jang Gyu Wool can't get one kind word out of Ahn Jung Won, who seems especially cold to her. A difficult professor joins the cardiothoracic department.
Kim Joon Wan waits for a response from Lee Ik Soon, who says she needs some time. Jung Won breaks painful news to the family of his longtime patient.
An unforeseen problem just before a surgery forces Jung Won to make a tough decision. Meanwhile, Joon Wan is put on edge in the operating room.
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.
An urgent call sends Song Hwa rushing to the hospital to tend to a young patient. Ik Joon receives a plea from a desperate father.
Put in a stressful situation, Jae Hak looks to Joon Wan for advice on the right thing to do. Ik Joon accidentally uncovers an extraordinary secret.
Ik Joon handles a sensitive request from the troubled wife of a patient. A sudden piece of news threatens Suk Hyung's peace.
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.
As life at the hospital goes on, the five friends' growing pains continue. Gyeo-ul is disquieted by frequent visits from a patient's mother.
Traveling to and from Seoul, Song-hwa takes on a VIP client in need of surgery. A woman with pregnancy complications fights to keep her baby alive.
An urgent case involving a liver transplant between a father and son is brought to Ik-jun's attention. Jun-wan has big news for one of his patients.
Worries about Ik-sun plague Jun-wan's ever-busy days. While watching over a patient post-surgery, Heo Seon-bin experiences a critical lesson.
Gyeo-ul receives a disturbing noise complaint about one of Ik-jun's patients. Seok-hyeong opens up to Song-hwa, who gives him a piece of advice.
From student to intern for Yun-bok and Hong-do, and resident to fellow for Gyeo-ul, every step forward comes with plenty of hiccups — and new learnings.
