When all the inhabitants of Pingaree are kidnapped by the mongrel hordes of twin island kingdoms, Prince Inga and his friend King Rinkitink decide to go to the rescue.
Book 10 in L. Frank Baum's beloved OZ series, in which young Prince Inga of Pingaree is aided by King Rinkitink and Bilbil the goat in rescuing his royal parents from the clutches of Kaliko the Nome King.