Ho-Tae (Joo Won) is a hot shot criminal profiler. He's currently working on a serial murder case. With his help, detectives are staked out to catch the murderer, but the suspect becomes involved in a hit-and-run accident. Ho-Tae assures everyone he will catch the driver of the hit-and-run accident. Ho-Tae works on the case and figures out the driver of the car is Yoon Jin-Sook (Kim A-Joong). Ho-Tae enters her unlocked apartment and comes face to face with the driver. He's stunned to see that the woman is Lee Sook-Ja .. his first love from his college days. Soon, Ho-Tae also learns that the woman is a cunning cat burglar.