In the near future, robots serve as common workers for their human owners. Prepared for a life of mechanical servitude, Yui, a robot maid, has just been bought by Takaya Murase from the robotic doll distributor, MaidWorks. However, Takaya has different plans for his new servant that do not quite involve cooking and cleaning the house. To her new owner, Yui is like a life-sized doll, on which he can act out his costume-dress-up fantasies. But Yui only wants to serve... Discover how this mismatched pair fares, especially once rival robot maids Minori and Ayumi enter the scene.