The stage is five years after "Borderless", Nao, Kiri, and Kotone have started a new life on their own. One day, a novel written by Kiri will be published under the name of a popular young actress. Kiri is dissatisfied but cannot resist. In addition, "incidents" occur to trace the incidents in the works. They can't believe it's a coincidence, who imitated what and why? As they tried to get to the bottom of the truth, an inescapable tragedy struck them again...
Nakanishi Aruno is disliked and bullied by other Nogizaka46 members because she's different from them. After one of them lock Aruno and tell her to not come back, she decides to come back definitely.