Everyone's favorite feline has managed to get to London by sneaking into Jon's luggage! In a case of mistaken identity, Garfield finds himself at Carlyle Castle, where the animals at the estate think that he is their new lord. But Garfield soon discovers 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!