Rinkitink in Oz (Include Audio book)

It tells the story of Prince Inga's quest to rescue his parents from captivity after his island home is ravaged by enemies. With the help of three magical pearls and the more dubious assistance of the excessively jolly King Rinkitink and his surly goat, Bilbil, his travels lead him to the underground caverns of the Nome King where he is united with some people from Oz who help him to free his parents and restore his island kingdom...