A male college student Ikeda lives alone and thus cooks for himself. One day, out of the blue, a housekeeper robot named Karetto, who has every attribute of a girl albeit unbelievably strong body-wise, not so much in terms of mind, comes to his house. Apparently he's been made without his knowing a subject of study which aims to improve one's means of subsistence. However, Karetto has not the smallest clue how to handle house affairs and is not willing to lift a finger. As such Ikeda now has to cook for two.