After solving the notorious series of inexplicable murders in Hinamizawa, Rika Furude and her friends succeeded in breaking the chains of fate. With her friends by her side, Rika hoped for a peaceful and normal life. However, fate had other plans for her as an unfortunate accident set its wheels in motion once again. Rika wakes up in a seemingly perfect world where the brutal killings never occurred, and her friends are happy and content. Despite her desire to remain in this faultless world, Rika discovers that she must destroy an essential "key" to return to her reality. But after fighting relentlessly to reach this point, can Rika simply abandon the chance to live in this idyllic world?