In the spring of 1998, Koichi Sakakibara transfers into Class 3-3 at Yomiyama North Middle School. But little does he know...his new class has a horrible secret. When he takes his seat in class for the first day of school, Koichi is unsettled by his fearful classmates. Despite this atmosphere and warnings from fellow students, Koichi is drawn to the beautiful, distant Mei Misaki, another classmate. But the closer he tries to get to her, the more mysterious she and their class become. And when a fellow student dies a disturbing death - the first of a long chain of deaths - Koichi seeks to learn the truth behind the curse of Class 3-3. But can he get answers before the curse kills him?

Summer, 1998. Mei Misaki, age fifteen, has gone with her family to their seaside vacation home. There she meets the ghost of Teruya Sakaki, her classmate from Yomiyama North Middle School Class 3-3 who, like Mei, witnessed the mysterious events that had transpired at the school. There begins an adventure of memory and mystery as they search for the ghost's body and his memories alike.