University students Yuri and Masato accept a peculiar invitation to a campground party, but things turn deadly when a cursed doll starts to attack.

On August 12, 2015, Hasegawa proposed to Ichiko. Ichiko is moved by Hasegawa's proposal and sheds tears, but the next day, she suddenly leaves home, seemingly shocked after seeing the TV news. Where did Ichiko go? Hasegawa reports the disappearance to the police, and the detective in charge of the investigation tells an unexpected story.

When Yuki's classmate suddenly dies, rumors begin to spread about her death and the relationships between Yuki and her classmates are disrupted amidst grief and forced normalcy.

Three girls - Miwa, an introvert who's best friend is her turtle, Saori, a rich girl from a celebrity family, and Koyuzu, a member of a revenge agency - wind up in a complex rivalry with one another.