Cat City tells the story of a young cat called Luke and a discovery that takes him on a magical journey. His best friend is Giuli. A cat who does not trust many. She leaves the city to embark on a long and dangerous trip to find out about her childhood and the mystery of her mother. A great evil, Dhrug, is approaching the city and the Spirit Guardians will have to do battle to save the citizens from a wicked future.

Everybody knows that the great city of Rome is also called the Eternal city and that within the Eternal city there is another great city called the Vatican City. But there is another significant city within the mighty empire and this is the city that people do not know about. It is situated in the heart of Rome in a place called 'The sacred area of Largo Argentina'. There, among the ancient ruins of Imperial Rome is the complex city called CAT CITY. Like all cities in all places, Cat City has a social structure and (as with all social frameworks) there are rules.