The likeable Mr Tibble is a good and kind man, but seems to lack the killer instinct to succeed at his job as a reporter on the town newspaper, where the editor is growing dissatisfied with his endless articles about the local cat population.
Minou is a cat...or at least she was until some freak of chance changed her into a young woman, albeit a young woman who loves purring, scratching, tree-climbing and other typically catlike pursuits.
When Tibble rescues Minou from an angry dog, and invites her in for a saucer of milk, both their lives are transformed. Minou exploits the feline grapevine to provide Tibble with inside information on the town's goings-on, and his career begins to take off.
But when he decides to confront a powerful local businessman on behalf of the cat community his newfound confidence and determination is put to the test...