Synopsis:

  As this last Oz story from L. Frank Baum opens, Dorothy Gale and Ozma have been dispatched by Glinda on a peacekeeping mission. It appears that war is imminent between two of the Oz peoples; the Flatheads and the Skeeters. The Flatheads (so named because the upper portion of their heads are missing leaving their brains subject to loss), live in a mountain top citadel and are led by the despotic Su-dic, who is preparing to attack the Skeezers. The Skeezers are led by a domineering young queen, who has a dark secret.

  After successfully dealing with a number of challenges as they penetrate to the far corner of Oz where these two groups live an isolated existence, Dorothy and Ozma discover that the Skeezers live in a glass-domed city in the center of Magic Lake. For added defensive measure, the island and its city can be lowered into the lake until it is completely submerged.

  Dorothy and Ozma soon learn that the two strong-willed leaders are not to be dissuaded from war, and that intervention will be needed to avoid a disaster for the people. So Ozma returns to the Emerald City, obtains consent from a Council of State of the leading personages of Oz, and launches an expeditionary force to intervene between the Skeezers and Flatheads.

  But before they can arrive, Dorothy discovers the real secret of why the two leaders are carrying their people into war, and obtains help from a young Skeezer boy, Euric, to correct the situation. But first she must discover the magic to escape from the submerged city and foil the initial attack by Su-dic. Euric proves resolute and courageous on his quest, braving very powerful magic from Reera the Red, a witch who hold the key to success.

  This enchanting tale keeps the reader engrossed in the mystery surrounding the conflict between these two Oz peoples, and how it will be ultimately resolved in the best of Ozian traditions.

Note:
1. This is the second of two posthumously published Oz books. L. Frank Baum died on May 6, 1919.
2. The full title was Glinda of Oz:  In Which Are Related the Exciting Experiences of Princess Ozma of Oz, and Dorothy, in Their Hazardous Journey to the Home of the Flatheads, and to the Magic Isle of the Skeezers, and How They Were Rescued from Dire Peril by the Sorcery of Glinda the Good.