In the picturesque mountains of Japan, Rikuto, a former demon hunter, and his mysterious angel companion Michi, are drawn into a mysterious story involving the mysterious disappearance of dogs. After the investigation, they discover that the real perpetrator is the seemingly innocent old woman Gertrude, who turns out to be a demon. Together they must face a demonic riddle that still hides many secrets to restore peace in the area. The story is about courage and magic hidden in the least expected places.