June of 1983. Keiichi, who moved to Hinamizawa, enjoyed a new life with Rena who lived in the village. One day in June, Rena notices that her father's attitude is awkward, and makes her distrustful.

When Rena learns that her father is tribute to the hostess Rina Mamiya, she remembers that her family had fallen apart because of her childhood, and fights against those who destroy her family so that she will not make the same mistake again. Make a decision.

Believing that Keiichi had noticed the crime he had committed, Lena learns that Detective Oishi is investigating Lina's whereabouts, and is entangled in a suspicious demon that springs up from within herself.

Rika, who intended to push Keiichi's back to avoid the tragedy, finds out that Keiichi and Lena have killed each other and despairs. Still, believing in a world where tragedy does not occur, Rika looks forward.

Mion, who received a doll from her beloved Keiichi, seemed to be out of her mind and had a happy time. However, when he witnessed Keiichi with Shion during his part-time job, Mion's heart shook violently.

Mion, who decided to protect Keiichi from the curse of Mr. Oyashiro, is confined in the basement of the Sonozaki family to interrogate one of the three families who believe that it is a mastermind. However, at that time, I wasn't breathing anymore.

Rika despairs because the tragedy cannot be stopped, no matter how many times the world repeats itself. Hanyuu, with pain in his heart, was also suffering from his helplessness. The next world started, and her best friend Satoko gently advised Rika, who cried.

Rika was informed by Satoko that she had to live with her uncle Teppei. For Rika, who didn't know how Teppei had changed, this meant the beginning of the worst world. Rika desperately tries to stop Satoko, but...

Seeing Satoko crying, Keiichi and his friends are reminded that there is no time to spare. The person who organized everything smiles at the appearance of the club members who unite with all their heart to save Satoko.

Oishi, who is obsessed with unraveling the truth about the Hinamizawa consecutive mysterious deaths, comes up with the idea of ​​using the truth brought by Teppei asking for help and using it as a decoy by pointing the haunting point at the Hojo clan.

On the day of cotton-washing, Satoko, who changed into new clothes, smiled at Rika who came to pick her up at home. Without noticing the tragedy that unfolded in the Hojo clan, Rika heads for the festival with Satoko.

In the endless tragedy, Rika's spirit was about to reach its limits. Hanyuu feels that Hinamizawa is different from what she used to be, and decides to restore the imperfect power she gave to Rika.

Hanyuu appears in front of Eua, who appreciates the story of Rika and Satoko. Hanyuu was very upset when he learned of the identity of the person who caused the tragedy created by Eua.

A person with witch's eyes points the muzzle at Rika who knows all the truth. It was the beginning of an eternal battle between repeaters, with only two.

At the end of a long battle, Rika holds a sword, Onikari Yanagisakura, who can truly kill those who repeat. Rika makes the final decision while various thoughts come and go. This is the story of "graduation" of girls who resist their destiny as non-human things.