The Rhyme Family tells the story of a book with a raspberry-colored cover left on the doorstep of the Rhyme Family, Willy, Milly, Lilly, Billy and Dilly. The book was actually discovered by their kitties, Sleeper and Beeper, who heard a "plop" in the middle of the night, while everyone was sleeping. The family embarks on a quest to find the owner of the book. She had told a neighbor that if she ever lost it, it could only be returned by a special family. And a rhyme in the book said that the book would return "on good deeds three". The story is about the return of the book and the good deeds which made it possible.