S t a r r i n g :

Song Joong Ki, twenty five years old bachelor is the youngest heart surgeon in Korea. He currently is a resident doctor and a professor at Seoul University's Hospital. The girls get head over heels for him because he is smart and has an innocent looking face. He might look like a casanova but in reality he is inexpeirenced when it comes to love.

Moon Chaewon, twenty two years old, is a pretty and smart lady. She is considered a chaebol in Korea due to the fact that she is the daughter of Moon Daehyun, who is the Chairman of Daesung Group. She studied Business Management in France and currently works at her father's company. When it comes to her personality, she is pretty blunt when it comes to expressing her opinion and feelings.

Yoon Yeo Jeong is a forty five year old widow, she currently lives with her daughter Yoon Bora. She is unemployed and has been receieveing money from Chaewon's father sine a long time ago. She is Moon Chaewon's aunt, and her father's only sister. She took care of Chaewon every since she was young. Chaewon used to love her when she was a kid.

Yoon Bora, twenty years old, is Moon Chaewon's cousin. She is currently a medical studtent studying at Seoul University. She is known to have a huge crush on Dr. Song Joong Ki.