Youichirou Tenkoku alone has had to take care of his house and younger brother Ryuunosuke after the death of his mother. To better support Youichirou and Ryuunosuke, their father, who was working abroad, had his company send a housekeeper named Shirayuki to their house. However, Shirayuki is not just a housekeeper but also a maid. How will Youichirou's life play out with this new unexpected resident?