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Season 1 Episodes
20 episodes
1
90
Episode 1
Risking lawsuits to save lives, surgeon Lee Hae-seong clashes with the hospital director, Park Geon.
2
90
Episode 2
A sudden explosion creates numerous casualties; Hae-seong, Ttol-mi, and Ji-na are all on the scene.
3
90
Episode 3
A 6.5 earthquake hits the city of Seoul; Hae-seong and Ttol-mi attempt to treat the injured.
4
80
Episode 4
There are people who are still alive under a pile of concrete; Hae-seong makes a difficult decision.
5
90
Episode 5
Doctors perform triage on the victims, but Director Park and Han U-jin have a different plan.
6
Episode 6
Mirae Hospital is running out of electricity, and Director Park prepares for a complete shutdown.
7
90
Episode 7
After going to search for a blood bank, Hae-seong returns to Mirae Hospital injured and unconscious.
8
90
Episode 8
The hospital depletes its resources, yet rescues continue and victims pour in.
9
90
Episode 9
U-jin complains of dizziness; a crisis strikes the ER as multiple patients go into cardiac arrest.
10
90
Episode 10
Director Park and Kang Ju-ran, head of ER, argue over whether to close the hospital.
11
90
Episode 11
While treating an elderly man and a young boy, Hae-seong experiences severe anxiety symptoms.
12
90
Episode 12
Hae-seong locks himself up in his room; Director Park vows to make him pay for his misjudgment.
13
90
Episode 13
Hae-seong studies to tackle a complicated surgery that no other doctor is willing to perform.
14
90
Episode 14
Director Park is asked to perform neurosurgery on a VIP patient who is in critical condition.
15
Episode 15
Director Park calls for an executive meeting to discuss Hae-seong's qualifications.
16
Episode 16
Director Park's struggle for power turns into a battle of pride between himself and Hae-seong.
17
Episode 17
Congressman Gu Ja-hyeok gets into a confrontation with the head of the fire crew.
18
Episode 18
Not able to trust another doctor with her father, Ttol-mi pleads for Hae-seong's help.
19
Episode 19
Mirae Hospital's doctors return to work; Director Park plans his revenge against Hae-seong.
20
Episode 20
Hae-seong faces the hardest decision he's had to make since he became a doctor.