In a world where almost every family has a cute household maid robot, ordinary elementary school student Bondo also made a wish with anticipation, hoping to have his own robot partner.However, fate played a joke on him - what appeared in front of him was not the gentle and well-behaved maid machine commonly found on the market, but an "atypical" existence with a weird personality and a huge energy!She is Robo-chan - the craziest, most powerful and most surprising maid robot in history!