A high-teen mystery thriller about a close relationship between teenage girls in a harsher survival competition than entrance examinations.

Han Jin Woo, Korea’s top medical examiner, leads a team of experts in conducting a medical crime investigation after strange events and mysterious deaths occur in a hospital. He first clashes with but is later aided by Kang Kyung Hee, an attractive female detective who possesses excellent skill in martial arts and a strong sense of justice.

Go-hwan, who suffers from Lou Gehrig's disease realizes that he is going to die. When his best friends ask him what his wish is, he tells them he wants to have sex for the first and last time in his life.