On your afternoon the 15-year statute of limitations expired to a high profile murder case that claimed the lives of 10 women, himself strikes off the construction facing of Choi Hyeong-goo. 2 years after, a man named Lee Doo-seok publishes a book titled"I'm the Murderer" claiming responsibility for the murders that happened 17 years ago. His book turns into a bestseller due to his depiction of the crime and the writer's magic looks . The detective and the self-proclaimed murderer meet with face to face to a television debate show. Believing that Lee is only a con artist, Detective Choi renews his search for the truth. Then yet still another man looks claiming he may be the real killer.