Keiichi Maebara, a student who recently moved into the village of Hinamizawa, is invited by his new friends at school to join their club. But while searching for treasure at a garbage dump, he discovers the village is not as peaceful as it seems.

The Cotton Drifting Festival is coming up and everyone goes to have a day of fun. During the festival, Keiichi gets separated from everyone and he meets Tomitake the photographer again, who later tells him more about the shocking past of Hinamizawa.

Delving further into the mysteries surrounding the village, Keiichi's paranoia grows after he starts to suspect that someone might be after his life.

Unnerved by Rena and Mion's menacing behavior, Keiichi begins to distance himself from his former friends — but it might already be too late.

Keiichi meets his friends in town to win prizes at a card game. Afterwards, at a restaurant, he is surprised to see Mion as a waitress, and even more surprised to find out it's not actually Mion.

The day for the Cotton Drifting Festival has arrived, and during Rika's ritual performance, Keiichi is taken to see the sacred festival storehouse.

Keiichi indirectly confesses to Rika about sneaking into the forbidden shrine, and he fears his admission may have put Rika and Satako's lives in danger.

The truth behind the recent incidents and the dark origins of Hinamizawa finally start to unravel as Keiichi and Rena decide to confront their suspect.

When Keiichi's parents leave for Tokyo for a few days, Satoko and Rika offer to help him around the house and he learns about the mysterious disappearance of Satoko's older brother, Satoshi.

Satoko has been absent from school, and Keiichi starts to worry about her family situation after discovering the cause of her absence.

Following Satoko’s disturbing panic attack in the classroom, Keiichi’s concern for her well-being grows to the point where he plans to take matters into his own hands.

After strange encounters with Takano, Dr. Irie, and Inspector Oishi, Keiichi starts to question whether the previous night's incident actually occurred.

When Keiichi heads to Satoko's house and finds her in need of medical attention, he becomes convinced that Oyashiro-sama's curse may be the cause of all these recent misfortunes.

Four years ago, during the Hinamizawa dam incident, young police investigator Mamoru Akasaka comes to the village to investigate a child kidnapping, where he meets young Rika.

Mamoru and Oishi discover some important clues, and head to the district of Takatsudo to continue the search for the Cabinet Minister's son. Little do they know, there are much more sinister forces at work.

The events from The Cotton Drifting Chapter are retold from another point of view. After two years away from the village, Shion comes back to Hinamizawa.

The recent incident at school has left Shion feeling very uneasy. She is able to muster the courage to call Satoshi, only to receive an apology from him. Something doesn't seem right.

When Shion decides to investigate Satoshi's disappearance, she meets Takano at the library, who tells her more about the dark history of Hinamizawa. The very next year, the past begins to repeat itself.

Shion overhears a conversation between Mion and her grandmother and begins to suspect her family may be involved in the recent events.

After questioning Headmaster Kimiyoshi for information about the previous murders and Satoshi's disappearance, Shion sets her sights on another one of the Three Great Families.

Shion tricks Keiichi into thinking that he may have put his friends in danger. However, when he figures out the truth, Shion is confronted by Keiichi and Rena.

After a day of summer fun, Rena goes to the garbage dump, where she begins to remember things from her troubling family background.

Rena learns of Rina's plot, and a confrontation at the deserted garbage dump triggers another disastrous chain of events.

While studying Takano's scrapbooks, Rena starts to uncover the the truth behind Oyashiro-sama's curse and Hinamizawa's dark past.

By discovering the truth behind Oyashiro-sama's curse, Rena has become a target of one of the Three Great Families, and she decides to go into hiding.

Rena has returned, but not for the right reasons, as she causes a serious crisis at the school, and demands the police investigate the Three Great Families' connection to Oyashiro-sama's curse. What will become of Keiichi and his friends?