Lion adopts a stray kitten and names it Eureka, but the kitten wreaks havoc on the castle! Dorothy realizes that Eureka isn't an orphan -- she's lost from her home in the Valley of Pussycats. When Dorothy and friends return Eureka to her family, they find that Purrville is being terrorized by a Rak! To make the town safe for the cats, Dorothy must find a way to get rid of the Rak.