The Hungry Tiger of Oz by L. Frank Baum is the twentieth book in the Oz series, written by Ruth Plumly Thompson, who continued the series after Baum's passing. In this adventure, the Hungry Tiger and Betsy Bobbin team up with Prince Reddy of Rash, who has been transformed into a reed, to rescue the kidnapped Queen of Rash. Their journey takes them through magical lands filled with new friends, clever puzzles, and dangerous villains, ultimately restoring the prince and queen while celebrating the enduring magic of Oz.