Miya lived peacefully with her husband Kenjiro and their two daughters, the eldest Akiko and the younger Yoko. But one day, a suspicious letter arrived along with Yoko's clothes, stating, "Your daughter is in our hands. If you want to save her, come to the following location." To ensure her daughters' safety, Miya decided to take her eldest daughter Akiko and their loyal servant Tagashira to the kidnapper's hideout. Their journey would be met with unknown dangers and desperate confrontations.