Ozma of Oz

This is the third book in The Oz Series by L. Frank Baum. While traveling to Australia with her Uncle Henry, Dorothy is swept overboard with a hen named Billina. They land in Ev, a country across the desert from Oz, and, together with new-found mechanical friend Tik-Tok, they must save Ev's royal family from the evil Nome King. With Princess Ozma's help, they finally return to Oz.