Every high-school has its own dark secrets. Well, maybe not every; but in Japan, this seems to be a rather popular theme. Mysterious disappearances, ghostly photographs, untimely deaths, eerie sounds coming out of the music room - all these things attract the curiosity of three high-school girls: Yukari, Mika, and Chisato. At night, armed with nothing but a flashlight, the trio of heroines enters the dark school building, prepared to explore every corner, and investigate every urban legend they have heard of...