At the Scarlet Devil Mansion, the residents and their servants live a somewhat idyllic, peaceful life. While the mistresses' whims occasionally take the inhabitants to bizarre places or into dangerous situations, everything always ends well. That is, until the past of one servant comes back to haunt her, threatening those she loves and the destruction of the home she's grown fond of. Can she make peace with those she left behind? Or will they be the end of it all?