In 1892, Oscar Zoroaster Diggs turned up in Topeka with a suitcase full of high quality emeralds. Instantly the richest man in Kansas, his winning smile and keen mind launched him into a meteoric political career. As Secretary of War under Teddy Roosevelt, Diggs oversees the construction of the ultimate tool for spreading democracy, a fleet of rigid airships. Dorothy Gale, a reporter for the Kansas Ear, is the one person who knows the truth about Diggs. She met him ten years prior in the Emerald City, where he ruled as the Wizard. But how can she explain to her editor that Diggs intends to use his aerial navy to invade an island in the clouds ruled by witches? Stopping Diggs is going to take more than the power of the press. She'll need the help of old friends, and maybe a Winged Monkey, as she pursues the Wizard across the wondrous and deadly Land of Oz.