In Paris, a cat who lives a secret life as a cat burglar's aide must come to the rescue of Zoe, the little girl he lives with, after she falls into a gangster's clutches.

In the heart of Paris, a kind and eccentric millionairess wills her entire estate to Duchess, her high-society cat. Duchess has three little kittens. A greedy, bumbling butler pulls off the ultimate catnap caper. Now it's up to the rough-and-tumble alley cat, Thomas O'Malley, and his band of swingin' jazz cats to save the day.