Matilda is looking for a job and a place to stay, and ends up in a large mansion known as the "Haunted House." The owner of the house, August, is a beautiful, soft-spoken woman, and Matilda is attracted to her and decides to work for her as a maid. However, that night, Matilda finds that her master has transformed.

住み込みの働き口を探していたマチルダがたどり着いたのは、〝お化け屋敷〟と呼ばれる大きなお屋敷。当主のオーガストは物腰柔らかく美しい女性で、マチルダは彼女に惹かれメイドとして働くことを決める。しかしその日の夜、マチルダは豹変したご主人様と出会い――。

〝血〟の絆が乙女を繋ぐゴシックガールズラブ開幕!!