A private school called Konoehara Academy is located in the suburbs of H City in Tokyo which was established over 100 years ago. There were rumors that every 10 years the school filled with dead people that said being part of the curse.

Around the end of summer, a student died in a strange way, but the police were unable to confirm the cause of the incident, rumors spread among the students that this was the work of the dead.

The principal hires the Kujou family who is familiar with rituals to bring back the peace in the academy.

The head of the Kujou family has started to investigate as a temporary teacher in order to unravel the truth of the rumors. And to experience the horrifying curse of the dead.