Heinous crime

Ten years ago, a little girl was brutally murdered in Seoul. Tae-sung, who was in charge of the case, could not find any clues about the murderer, and finally the case remained unresolved. Ten years later, another female high school student was kidnapped. Tae-sung, who was once again responsible for the case, had an intuition that the suspect might have some connection with the murderer he was determined to arrest ten years ago...