In a future war, a young battle robot pilot suspected of being a spy must face court martial. Meanwhile, the home village of a friend of his is threatened by enemy forces.

When Madame Adelaide Bonfamille leaves her fortune to Duchess and her children — Bonfamille’s prize family of domesticated house cats — the butler plots to steal the money and kidnaps the heirs, leaving them out on a country road. All seems lost until the wily Thomas O’Malley Cat and his jazz-playing alley cats come to the Aristocats’s rescue.