She graduates from a little-known medical school in her hometown, the remote island of Ulleungdo, and against all odds, gets accepted into the prestigious Hankook University Hospital residency program in Seoul.

She immediately gets on the bad side of Ahn Joong-geun (Lee Beom-soo), a brilliant but extremely strict cardiothoracic surgeon who often gets angry at the mistake-prone Dal-hee.

Adding to the negative impression is Dal-hee's friendship with recently divorced general surgeon Lee Geon-wook (Kim Min-jun), who was Joong-geun's rival since their intern years.

Geon-wook and Moon-kyung split up after he learned that their six-year-old son was fathered by another man before they married, leaving him feeling betrayed and angry.

[3] Surgeon Bong Dal-hee was a hit; it recorded average ratings of 22.4% and a peak of 29.3%, and was number one in its timeslot for most of its run (beating the competition Dal-ja's Spring on KBS2 and Prince Hours on MBC).