Everyone's favourite feline has managed to get himself to London by sneaking into Jon's luggage. In a case of mistaken identity, Garfield finds himself at Carlyle Castle, where the animals of the estate think he is their new lord. But Garfield soon realises that the real lord of Carlyle - Prince XII - has been kidnapped by the evil Lord Dargis who wants to take over the estate. Help Garfield and his new friends on their mission to defeat Dargis and return Carlyle Castle to its rightful owner.Garfield has found his way to England and has gotten entangled in a dastardly plot to demolish an ancient castle, destroying the home of his new animal friends. Garfield must explore the castle, rescuing his friends from the evil Lord Dargis, and - with their help - bring Dargis's plans to an end.