Rinkitink in Oz (Books of Wonder)

Meet Rinkitink--a kindhearted king who's as fat and jolly as old Saint Nick himself! When the jovial monarch sails for a visit to the island kingdom of Pingaree, he and his talking goat, Bilbil, are welcomed with open arms. Before long, Rinkitink's lighthearted ways and merry songs endear him to the king and queen of Pingaree, as well as to their son, Prince Inga. But when the peaceful isle is invaded by fierce warriors, everyone from the rulers to the smallest child is taken off in chains. Only Prince Inga, Rinkitink, and Bilbil escape the conquerors. And so the three friends set out--aided by the magical Pearls of Pingaree--to rescue the prince's people.