One after another students die in horrific ways. No one can escape from this chain of accidental deaths.
Koichi Sakakibara moves to his maternal grandparent's house in a small town, because of family circumstances, and encounters a pretty young girl with a mysterious eyepatch. He meets her in the junior high school class that he transfers into and talks to her, but finds that for some reason the other students in the class and even the homeroom teacher behave as if 'she absolutely does not exist.' In the midst of this, a classmate dies in a mysterious accident, and what's more other classmates and their families die in horrific circumstances... What curse is leading to this succession of deaths? And what shocking ritual has become part of his junior high school?!