Yamagishi, the head maid who pledges absolute loyalty to her master, lives a life of devotion alongside Tabuchi, a long-serving butler, and the other maids at the estate. One day, when the master announces a week-long business trip, Tabuchi's hidden, sadistic nature emerges. He forcefully rapes Yamagishi and threatens to claim she seduced him. While he conceals his actions from the other maids, he repeatedly forces creampie after creampie upon her. Determined to survive until her beloved master returns, Yamagishi resolves to do whatever it takes to protect herself. How will these dark days gradually change her?