Olga Romanoff, or, The Syren of the Skies continues the saga of the ultimate Anglo-Saxon utopia, Aeria, in the years 2030-2037. After the leaders of Aeria relinquish their control of the world to individual countries after 125 years of peace enforced by Aeria's domination of the air, the beautiful but thoroughly evil Olga Romanoff begins her quest to regain the power of her ancestors, the Tsars of Russia, who had fallen to Natas and his ally, Richard Arnold, conquerer of the empire of the air. Using a mind-control love potion, Olga enslaves Aeria's top two engineers, Alan Arnold (the direct descendant of Richard Arnold) and Alexis Masarov, and builds her fleet of aircraft and submarines in preparation for war. But Olga underestimates the wills of Alan and Alexis, who escape and mount a counterattack. Will Alan and Alexis be able to stop Olga and her new ally Sultan Khalid the Magnificent and save the Aerians before an even greater terror arrives to destroy the world?