Among Mrs. Brice's 25 mice, all but one do everything together. And this mouse's difference ‘comes in handy when the mice meet a cat, and while twelve run this way and twelve run that, this mouse runs this way and that, wearing out the cat and saving them all.
Though he is used to the city streets, Barney's horse becomes frightened of the noisy new overhead trains.
He likes his new room and his new street. The policeman and the mailman are very nice. But what Freddy really needs are friends -- and he looks everywhere until he finds them!