Hidden along a medieval fantasy's realm is a countryside which sits a manor, a large Gothic Revival style estate with a garden and pool, whose Mistress is a Vampire Monster Girl named Ruby. This manor is ran solely by monster girls of varying species whom have pledged obedience to Ruby in exchange for protection, shelter, and food. Ruby often mistreats and neglects her staff in favor for human men, causing the staff to dislike her and seek men for themselves without Ruby's knowledge.