Episode 1
After passing the bar exam, Ha-yoon decides to enter an internship program so that she could become a specialist in malpractice cases when she becomes a lawyer later on. So she goes to the interview to win a spot in the internship program at Sungui University Medical Hospital. She hitchhikes a ride on an ambulance to get to her interview on time. Growing up on a diary farm in Daegwallyeong, Choi Jin-sang is a first year resident who is always causing problems. He gets in trouble after losing a lab pig and he encounters Jung Ha-yoon while he is delivering another lab pig by ambulance, which happens to be the one that Jung Ha-yoon hitchhikes a ride on.
Episode 2
Both Jin-sang and Ha-yoon pass the interview and are asked to join the internship program at Sungui Hospital. But before Jin-sang can celebrate the good news, the supervisor resident Yong-han bust everyone’s chops and tells them to be on their toes. In the string-tying test that all the first year residents take, Jin-sang comes in last while Ha-yoon and Hyun-woo vie for first place. Ha-yoon eventually takes the top spot. Meanwhile, a kidnapper with a gunshot wound is brought to the ER and a tense atmosphere grips the hospital...
Episode 3
Jin-sang is awarded a plaque by the police force for helping them find the kidnapped girl and saving her life in the process. This gives him immense pride. While the first year residents have drinks with the senior residents including their supervisor Yong-han, Jin-sang gets drunk and talks back at Yong-han to the horror of everyone at the bar. On the next day, Jin-sang realizes that he has to make amends for what he did yesterday to the supervisor but he suddenly experiences acute abdominal pains...
Episode 4
Dr. Han Ki-tae successfully performs an operation on a patient who suffers from Whipple’s Disease and his fame rises as one of the leading surgeons in the nation. After Jin-sang gets his appendix removed, he announces that he will try his best to join Dr. Han’s research team. A patient with pancreatic cancer is hospitalized at Sungui Hospital and the medical staff becomes busy treating her. Dr. Han and Dr. Kim Do-hoon form different diagnoses on the patient who seems to have pancreatic cancer and the mood in the general surgery department becomes turns tense...
Episode 5
Dr. Kim begins operating on Lee Hee-seob and is astonished that he misdiagnosed her after finding out that she has pancreatic cancer instead of a biliary tract inflammation. This deeply disturbs him and sows internal doubts about his abilities. Ha-yoon becomes deeply disappointed that the risky operation that they performed on Lee Hee-seob will now shorten her life. While Hyun-woo avoids going into the operating room, Jin-sang enters the operating room by accident and assists Dr. Kim during the operation. Jin-sang receives the top score among the first year residents and this boosts his confidence.
Episode 6
Kang Young-won, who is scheduled to have a thyroid operation, gets permission from Hyun-woo to leave the hospital briefly. However, he becomes the victim of a hit-and-run accident. When he is taken to the ER, Jin-sang is ridden with guilt because Kang Young-won was his patient. If Jin-sang comes clean and tells everyone what happened, then he might be fired. Since Ha-yoon already knows everything, Jin-sang can’t hide the truth either...
