Rurikawa Tsubaki, a former noblewoman, is called by her master during work hours, and despite the presence of a junior colleague, she is fingered in the hallway and feels more than she could have ever imagined... Although bewildered by the changes in her body, Tsubaki acts bravely so as not to lose her pride as an aristocrat... However, with the perverted maid training that continues every day, her mind and body are gradually consumed by pleasure!