In the sleepy rural village of Hinamizawa, paranoia and rage can drive a person to commit the most vile, unspeakable acts. When Rena discovers that her father is being duped and targeted for blackmail by Teppei Hojo and his girlfriend Rina, she confronts each of the extortionists. Consequently, Rena's growing distrust and paranoia spirals out of control, and she holds her classmates hostage and faces off against Keiichi in a deadly rooftop duel!