During his school days, Yeo Jeong Woo always placed first in academics and he studied at the top medical school in the country. Jeong Woo is now a popular plastic surgeon. His life goes smoothly, but, due to a mysterious medical accident, his life is pushed to the edge. At this time, he meets Nam Ha Neul. She was a rival in his past and he meets her at the lowest point in his life. Ha Neul works as an anesthesiologist. When she was growing up, people called her a genius due to her extreme intelligence. She studied hard and became a doctor. Her life consists of only work and studying. She doesn't have any time to experience fun. One day, Ha Neul realizes she isn’t happy with her life and she wants to make a change. At this time, she meets Jeong Woo during one of the worst moments in her life. They comfort each other and a romantic relationship blossoms between them.