行方不明になっていた中学2年生の女子生徒が遺体で発見され、首にはかつての連続殺人事件の被害者と同じく絞められた痕があり、遺体発見現場も同じ山中。これは偶然か、それとも――。 松本良夫死刑囚（片岡正二郎）の冤罪を訴えていた拓朗（眞栄田郷敦）の言葉に、わずかな可能性を見た恵那（長澤まさみ）は一人で事件を洗い直す。そして、検察側のある主張に違和感を覚える。 一方、事の重大さに気づき、一度は手を引いた拓朗だったが、恵那が本格的に動き出したことを知り、自分も手伝いたいと申し出る。するとその矢先、担当弁護士の木村卓（六角精児）を通して面会を申し込んでいた松本死刑囚本人から、恵那宛てに手紙が届く。さらに、思いもよらない人物から1本の電話がかかってきて…。
핫토비산 연쇄살인 사건의 진범을 찾기로 마음먹은 에나. 에나는 프라이데이 봉봉에서 이 사건을 탐사 보도하려 하지만 프로듀서들이 허락할 리 없다. 하지만 에나는 자신에게 이 사건을 알린 스태프 체리와 대화를 나눈 뒤, 혼자서 취재에 나선다. 그런 에나의 주변을 맴도는 타쿠로. 자기는 못 하겠다고 도망가놓고선 에나를 불러서 하는 말이 도울 수는 있을 것 같단다. 어쨌든 아군은 많으면 많을수록 좋은 법. 에나는 굳이 거절하지 않는다.
A missing second-year junior high school girl is found dead, with strangulation marks on her neck like the victims of a former serial murder case, and her body was found in the same mountains. Is this a coincidence or -? Ena (Nagasawa Masami) sees a slight possibility in the words of Takuro (Maeda Go Atsushi), who had accused Yoshio Matsumoto (Kataoka Shojiro) of being falsely convicted of the death penalty, and reconsiders the case on her own. She then feels uncomfortable with certain claims made by the prosecution. Meanwhile, Takuro realises the gravity of the situation and withdraws from the case, but when he learns that Ena has started working on it in earnest, he offers to help. Just then, he receives a letter addressed to Ena from Matsumoto, who had requested a meeting with him through his lawyer Taku Kimura (Seiji Rokkaku). She also receives a phone call from an unexpected person...
