Synopsis
The story opens with a dinner party, attended by seven of the characters from Baum's inaugural book. Present are the famous foursome, Dorothy Gale, the Scarecrow, the Tin Woodman, and the Cowardly Lion, along with the Wizard, Jellia, and the Soldier with the Green Whiskers. (Baum named the latter personage Omby Amby, but Thompson re-christened him Wantowin Battles.) The dinner is hosted by the Wizard, preparatory to his introduction of his newest invention. After a long session of reminiscence that fills the first chapter, the Wizard takes his guests to a glass-domed building that contains two gleaming silver aircraft, the newly-created ozoplanes. The Wizard has named them the "Ozpril" and the "Oztober." The guests enthusiastically pile into the craft to inspect them.
The Soldier with the Green Whiskers ate twenty-nine pickles at dinner, and is suddenly overcome by a violent cramp. He slams into the control panel of the Oztober, depressing the up, south, fast, spin, spiral, zig, zag, slow, and circle buttons simultaneously. The Oztober zooms off into the sky, headed for parts unknown, with the Soldier, the Tin Man, and Jellia on board. The Wizard, startled and appalled, takes the Ozpril in pursuit and in search of the Oztober, accompanied by Dorothy, Lion, and Scarecrow.
Enduring a chaotic flight, the resourceful Tin Man eventually gets the ozoplane under control; he decides to teach himself to fly the craft, and then return to the Emerald City. In the dawn of the new day, he sights an unknown country in the sky, and lands the plane there. He enthusiastically but undiplomatically claims the place for Ozma as a colony of the Land of Oz. The country, however, has a name, and inhabitants, and a touchy, egotistical, and aggressive ruler: Stratovania is the domain of King Strutoovious the Seventh. (He calls himself "Strut of the Strat" for short.) This king quickly decides to turn the tables and conquer Ozma and Oz. He holds the new arrivals prisoner — though his hostility is somewhat mollified by his affection for Jellia; he likes her smooth brown hair, so different from the upstanding "electric hair" of the Stratovanians. Strat impulsively names Jellia his "starina" — a pun on "czarina." (Similar puns flow thick and fast: the new starina is addressed as "your Skyness" and "your Stratjesty.")
Despite his affection for Jellia, Stratoovious assembles his army of Blowmen and forces the Tin Man to pilot the ozoplane back to the Emerald City. The other Ozites, left behind, try to find a way to counter this threatened invasion of Oz. Jellia tries to use her influence as starina — but faces the opposition of Strut's existing queen, Kabebe. Jellia and Wantowin are in danger on being thrown off the edge of Stratovania, when the Wizard and company arrive in the second ozoplane. But the plane is blown up by the Blowmen, and the Ozites have to leap off the edge of the skyland to save themselves.
The Wizard uses the magic in his "kit-bag" (it has green eyes and emits feline yowls) to cushion their fall. The Ozites land at Red Top Mountain in the Quadling Country. The place's rightful ruler, Princess Azarine, has escaped the clutches of the usurper Bustado (an even worse villain than Strut) who captures the Ozites. This villain sends the Wizard in search of Azarine, and holds the rest of the party hostage. Yet the hostages escape, and meet up with the Wizard, Azarine, and her protectors, the great stag Shagomar and his wife Dear Deer. The group reaches the palace of Glinda, though the sorceress is absent with Ozma; the Wizard is able to use Glinda's magic to combat the Stratovanian invasion.
Strut and his forces reach the Emerald City; the residents flee or hide. Strut tries to obtain Ozma's Magic Belt from her safe, but is frustrated; the Wizard has united with Ozma and Glinda to rescue the Belt, the most powerful magical talisman of Oz. Once in possession of the Belt, Ozma sends Strut's army home and ends his bid for conquest. She turns the usurper Bustado into a red squirrel, so that Azarine can resume her rightful place after enjoying an Emerald City vacation.
Thompson gives her protagonists some odd adversaries, including sky creatures called spikers that are something like iridescent octopuses, and a large fierce bugbear that is half insect and half bear in form. And she indulges in extravagant nonsensical tech talk, as with the Wizard's "elutherated altitude pills" and Glinda's "triple-edged, zentomatic transporter." She also misuses the word "entomophagous" to mean insect-like; it actually means something that eats insects.
Read more about this topic: Ozoplaning With The Wizard Of Oz