D-DaySeason 12015 · 20 episodesEpisodes1Episode 1Risking lawsuits to save lives, surgeon Lee Hae-seong clashes with the hospital director, Park Geon.2Episode 2A sudden explosion creates numerous casualties; Hae-seong, Ttol-mi, and Ji-na are all on the scene.3Episode 3A 6.5 earthquake hits the city of Seoul; Hae-seong and Ttol-mi attempt to treat the injured.4Episode 4There are people who are still alive under a pile of concrete; Hae-seong makes a difficult decision.5Episode 5Doctors perform triage on the victims, but Director Park and Han U-jin have a different plan.6Episode 6Mirae Hospital is running out of electricity, and Director Park prepares for a complete shutdown.7Episode 7After going to search for a blood bank, Hae-seong returns to Mirae Hospital injured and unconscious.8Episode 8The hospital depletes its resources, yet rescues continue and victims pour in.9Episode 9U-jin complains of dizziness; a crisis strikes the ER as multiple patients go into cardiac arrest.10Episode 10Director Park and Kang Ju-ran, head of ER, argue over whether to close the hospital.11Episode 11While treating an elderly man and a young boy, Hae-seong experiences severe anxiety symptoms.12Episode 12Hae-seong locks himself up in his room; Director Park vows to make him pay for his misjudgment.13Episode 13Hae-seong studies to tackle a complicated surgery that no other doctor is willing to perform.14Episode 14Director Park is asked to perform neurosurgery on a VIP patient who is in critical condition.15Episode 15Director Park calls for an executive meeting to discuss Hae-seong's qualifications.16Episode 16Director Park's struggle for power turns into a battle of pride between himself and Hae-seong.17Episode 17Congressman Gu Ja-hyeok gets into a confrontation with the head of the fire crew.18Episode 18Not able to trust another doctor with her father, Ttol-mi pleads for Hae-seong's help.19Episode 19Mirae Hospital's doctors return to work; Director Park plans his revenge against Hae-seong.20Episode 20Hae-seong faces the hardest decision he's had to make since he became a doctor.
