Story:
The first episode is very promising. Some of my favorite scenes were between Park Hoon and his father when they were in North Korea. But, things will quickly go downhill after the first few episodes. What annoyed me the most is how the writers didn't even bother to give the female lead a backstory. We just know that she's from North Korea and that she had a father. Because of that, she was overshadowed by the second female lead, who had a better story and character development. Another thing is I didn't buy at all that Hoon really loved the FL; it came off as an obsession to me. Lastly, the hospital politics as well as the competition were dragging. I struggled to watch the latter part of the drama because of it.

Cast and Characters:
I don't have much to say about Lee Jong-suk, Kang So-ra, and Park Hae Jin. They are all good, reliable actors. They all did their part well. And I loved the chemistry between LJS and KSR. They gave me second-lead syndrome. Jin Se-yeon, on the other hand, is an awful actress. All throughout the drama, she only had one expression. She needed an acting workshop. Her and LJS had no chemistry at all.

Music:
The OSTs are great.

Overall:
This is only worth a watch if you like amazing second female leads and if you are a fan of medical dramas.