Lee Ho Tae is a hot shot criminal profiler, he was 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. He works on the case and figures out the driver of the car, he then enters the drivers unlocked apartment and comes face to face with him. He's stunned to see that the woman is Yoon Jin Sook.. his first love from his college days. Soon, Ho Tae also learns that the woman is a cunning burglar.