Mari's husband's company is in debt, so they turn to his wealthy uncle, Toru. Toru agrees to help financially but demands that Mari take care of him. Despite Toru's lack of tact and being physically repulsive, Mari reluctantly becomes his maid. One day, while cleaning, she accidentally breaks an expensive vase, setting off a chain of events. She is forced to wear revealing maid outfits and become his obedient creampie pet.