Hajime Kindaichi, Miyuki Nanase, and their English teacher, Susumu Odagiri, go to the Cross-shape Village to take Wakaba Tokita from the forced marriage. Wakaba was found dead inside the locked church with his head missing when they held the ritual before the wedding. Afterward, another villager mutilated, and his condition imitates the mummy they had. Hajime and the others try to find the true identity of the formless murderer, the fifth mummy.