19th century England.
A village of human wolf that was once abandoned due to the spread of the plague in Cumbria, northwestern England. The young man "Haru", a descendant of the werewolf tribe, has been traveling since he was nine years old. It was to use the plague to enter the village, seek out the ghoul duo who had eaten up the villagers, and take revenge.
Ten years later, Hull finally found the half in the city of London, but he was suspicious that the 12- and 3-year-old boy was exactly the same as 10 years ago, but he could speak Cumbric. He was hired as a servant of the boy who was looking for him, and succeeded in approaching him ...