D-Day ( Korean : 디데이; RR : Di Dei) is a 2015 South Korean television series that aired on jTBC on Fridays and Saturdays at 20:40 ( KST) time slot for 20 episodes beginning September 18, 2015. Synopsis. Lee Hae-sung ( Kim Young-kwang) is a surgeon who is transferred from one of the best hospitals in Seoul to a rundown hospital with no ER.
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