Jo Soon-jae

A Korean man in China takes an assassination job in South Korea to make money and find his missing wife. But when the job is botched, he is forced to go on the run from the police and the gangsters who paid him.

40-year-old Sociology professor Hye-jung falls for a 21-year-old Usang, a male student who helps her project research on women's extramarital affair. Their prohibited love and secrets are watched and told by two secretive observers. They are her copy machine and his digital camera.

Sung-Bum is a hot-tempered detective who relies on his intuition to crack cases. He rarely comes across a case that he cannot solve. The body of a police officer is then discovered in a burned out car near an abandoned building. Drugs are also found near the dead officer. To catch the killer the police department sets up a special investigation unit for the case. Sung-Bum takes part in the investigation. Ho-Ryong is a young, confident man who works as a criminal profiler. He trained with the F.B.I. in the United States. Ho-Ryong is also assigned to the special investigation unit. Ho-Ryong relies on evidence rather than instinct. Detective Sung-Bum takes an immediate dislike for Ho-Ryong.

Mal-hee, brought up by strict single father, is a 33-year-old virgin. Everybody except her seems to have a decent sex, even her conservative father died while having heated sex. What is worse, Se-young who enjoyed sex storms with Mal-hee's father intrudes her life claiming Mal-hee's father had a will that he would give his house to her. Mal-hee has no choice but living with Se-young to keep her father's reputation. However Mal-hee is slowly fascinated by Se-young's frank attitude, and finally decides to get laid before too late. Following Se-young's instruction, Mal-hee is set to seduce her Mr. Right.