Tess and her daughter, Anna, do not get along. However, things take a turn when, in a freak incident, they switch bodies and are forced to live each other's lives.
When the Littles adopt Stuart, the mouse, George is initially unwelcoming to his new brother, the family cat, Snowbell, is even less enthusiastic. Stuart resolves to face these difficulties with as much pluck and courage as he can muster.
