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.

A resort hotel is the rendezvous destination for Kouichi, Reiko and Matsunaga. As they spend a day sunning at the beach, they run into Mei, who's staying nearby.

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.