Saeko, a woman with a mysterious past, is hit with a rock and brutally raped by a man wearing a dark mask and black gloves. Her life is spared, but soon brutal murders befall the residents of the Kibougahara Apartment building. The victims are beaten, killed, and their genitals are set on fire. Saeko has her suspicions about the killer’s identity, but will she live long enough to unmask the pyromaniac?