Unnerved by Rena and Mion's menacing behavior, Keiichi begins to distance himself from his former friends - but it might be too late. On the way home from school, Keiichi is attacked!
Shion is convinced that her own family is responsible in some way for the numerous disappearances plaguing the village. With that in mind, she takes action.
After Rena and Keiichi confront Mion about Rika and Satoko, chilling revelations shed light on the dark origins of Hinamizawa - origins that include cursed blood lines and demonic possessions.
Rena takes the school hostage using a homemade bomb and demands the police investigate the Sonozaki family's connection to Oyashiro-sama's curse. Can Keiichi save his classmates from being burned alive?
In the aftermath of Satoko's traumatic breakdown, Keiichi decides extreme measures are needed to save her from the abuse of her uncle. On the night of the town festival, he lures Teppei out of his house.
Has everything been an illusion? When Keiichi heads to Teppei's house and finds Satoko in need of medical help, he becomes convinced: the curse of Oyashiro-sama is causing these misfortunes.