The victory of Suzuko Homura and Chinatsu Morikawa over the villainous Bookmaker Kou Satomi has enabled the two girls to finally return to a normal life and take the opportunity to move forward. However, this peace is short-lived, as Kiyoi Mizushima asks for Suzuko's help to stop the next cycle of Selector battles; even after Satomi's defeat, attempts to carry out his plans appear to continue. Plagued by lingering doubts and the unresolved situation, Suzuko chooses to aid Mizushima in her investigation—unwittingly drawing herself into the intensifying conflict that will decide the fate of the Selectors once and for all.