The series of mysterious murders in Hinamizawa has been solved thanks to Rika Furude and her friends' efforts. With the resolution of the case, the cycle of fate has come to an end. Although Rika believes she can now enjoy a peaceful life with her companions, her hopes are shattered when the wheel of fortune turns once more after an accident. In this new world where the killings never happened and everyone is content, Rika struggles to reconcile her desire for peace with the knowledge that destroying a crucial "key" is the only way to return to her previous life. Will she be able to abandon the perfect world she has been given the chance to live in, after all her hard work has brought her this far?