Kouichi Sakakibara has just arrived in Yomiyama, and he's already hospitalized with a collapsed lung. After joining the local middle school almost a month late, he becomes friends with someone he met while in the hospital — a quiet girl with an eye patch.

Kouichi's friendship with Mei seems to be one sided. He takes every chance he can get to speak to her, but she never seems to understand what he says. Her replies seem more cryptic as the days go by, and their classmates become increasingly suspicious.

A studio crowded with old dolls is the perfect place for Mei to tell Kouichi the tale of three students' mysterious deaths 26 years ago. Finding out more information from his classmates proves difficult, but his aunt Reiko is willing to tell him more.

The rumor of the "Class 3 Curse" gains notoriety with the sudden and accidental death of a student. Kouichi, desperate to know more, turns to Mei who refuses to tell him anything else. Izumi Akazawa, the head of countermeasures, begins the investigation on Class 3.

Following Mizuno's bizarre accident, the tension rises in Class 3, and Izumi is chosen as the new Class Officer without Kouichi knowing. Rumors are spreading, but no one is willing to say anything.

An unexpected accident outside Yomiyama once again puts Class 3 on edge. After Matsunaga's vague whispers point to the classroom, Kouichi decides to investigate the old Class 3 homeroom in the former school building.