After a chain of deaths at a junior high school, new transfer student Koichi Sakakibara turns to a mysterious girl who holds the key to the dark mystery.

Harumi Hagiwara lands in the hospital after being involved in an accident. She hits it off with her nurse, Reiko Nishimura, and the two decide to move in together after she's discharged. However, Harumi begins to witness a series of mysterious events soon after noticing Reiko's strange behavior. Additionally, she fears for her own safety when Reiko starts referring to herself as 'Mari' as if she's become an entirely different person. Before long, the situation develops into a case of murder.

On her way to school, high school girl Nana sees a train accident. Then Nana and her friend Kanae start to come across various bizarre phenomena, including red fingerprints and a female spirit who 'lives' on the station platform. One day, Nana's younger sister is lost, and the only possibility seems to be that she had been taken by these spirits. The missing tracks. The predictions that a mysterious woman makes.