[Machine Translation] A suspense horror film set in a school. One night, the janitor on duty dies a mysterious death. It is said to be the work of the spirit of a student who committed suicide in the past, which is rumored throughout the school. Three curious high school girls who wanted to find out the truth also died mysteriously. The school tries to cover this up, but the new teacher, Aizawa, overcomes the objections of the school principal and asks an outside journalist to help solve the case. As the investigation proceeds, the school's sealed secrets gradually come to light.