When Fiona wanders into an abandoned mansion down by the harbor, she discovers the house is full of stray cats (and two chaotic budgies). Fiona feels a great deal of sympathy for the animals; she understands what it's like to need a safe home. Ever since her parents died, she's been struggling to adjust to the tiny apartment where she and her Aunt Tanis now live. And Aunt Tanis has little time to spare for Fiona, between her job at The Municipal Hall and her horrible, hair-gelled boyfriend. When the mansion is threatened by a demolition team, Fiona is determined to save 'The City' and its residents. But the cats have their own priorities. Cot (short for Cottonball Fluffikins Magnificent III, a name he refuses to acknowledge) has lived in the mansion for two years and is the self-proclaimed king. He's convinced the demolition effort has been organized by the recently arrived budgies. Those birds have got to go! Cot's feline rival, Piper, is sure she can intimidate the demolition team and force them to leave, if Fiona will simply stay out of her way. And the budgies... well, the budgies just want to go home. As the demolition team begins tearing down the house next door, Fiona looks for any help she can find - at the library, the butcher shop, and even at The Municipal Hall. Can the efforts of one small girl and an assortment of animals stop a luxury condo development? Can they create something better in its place? It's going to take some quick thinking on the part of Fiona, not to mention the cooperation of all the cats, to give The City a future.