Join the living marionette Pocotristi Sostenuto—better known as Poco—on his desperate search for the missing Rundelstone of Oz.

Poco and his fellow Troupadours travel through remote corners of the magical Land of Oz, presenting plays to entertain the inhabitants. But after a triumphant performance in Whitheraway Castle, Poco suddenly finds himself alone and thrust into a new line of work—as major-domo to Slyddwyn the Whitherd.

Soon, unanswered questions trouble Poco. Who is the mysterious black-bearded stranger repeatedly donning disguises to gain entrance to the castle? What scheme is Slyddwyn the Whitherd planning? And where did Poco's fellow players really go?

To get answers, Poco must find the mysterious Rundelstone—and he better find it fast, or else the sun will never rise again on the hidden Oz kingdom of Fyordi-Zik.

At first, Poco's only ally is a Gillikin boy named Rolly. But even when Ozma, Dorothy, the Cowardly Lion, and the Wizard of Oz join Poco, can anyone hope to untangle the devious designs of Slyddwyn?

The Rundelstone of Oz bursts with magic and surprises right up to its final page.