在这部马克斯之山犯罪片中,南アルプス夜叉ヶ峠で起こった親子心中事件で生き残った少年が、その後成長して「マークス」を名乗り、連続殺人を犯す。「マークス」には、ある事件に関係するキーワードが隠されていた。
20 years ago a half-frozen boy was rescued in the mountains after his parents apparent suicide. He gets released from a mental institution and his girlfriend notices him talking about a dark mountain shadow. Meanwhile a murder happens in a residential area in Tokyo. Assistant Inspector Goda Yuichiro takes on the investigation. Soon an official of the Ministery of Justice gets murdered in a similar fashion pointing towards a serial killer. Yet, Goda receives a strange order from above: he's not to further investigate in this direction. He senses a huge mystery behind the case and starts chasing after the psychopath killer called Marks. Somehow a journalist's research about a corrupt construction magnate and another unsolved murder that happened in the mountains 13 years ago are also linked to the case.
越过黑暗之山——化解马克斯之山的魔咒。马克斯之山， 一座诅咒人性罪恶的山。终点。黑暗在心中。犯罪者与受害人。
