Set in the faceless suburbs of Tokyo, where a serial killer has been murdering young women, severing their left hands and leaving their bodies artistically posed in easy to find locations. His antics catch the eye of two high school students, the beautiful loner Morino (Takanashi Rin) and the popular, outwardly happy seeming Kamiyama (Hongo Kanata)  both harbour a disturbing fascination with death, murder and human cruelty. After Morino finds what they believe to be the killer's notebook, the two attempt to track him down, not to bring him to justice, but so that they can see the corpses for themselves before the police. Inevitably, the closer they come to their quarry and his victims, the more they put themselves at risk, testing the limits of their shared obsession.