The Girl Aviators' Sky Cruise by Margaret Burnham is a captivating tale set in the early days of aviation focusing on the adventures of Peggy Prescott and her brother Roy. The story begins with the siblings returning from a trip to Nevada only to discover a new aeroplane manufacturing plant the Mortlake Aeroplane Company has been established near their home in Sandy Beach. This company backed by the unscrupulous Mr. Harding poses a direct challenge to the Prescotts' own aeroplane endeavors. Peggy a skilled aviator demonstrates the capabilities of their monoplane the _Golden Butterfly_ to a visiting naval officer Lieutenant Bradbury who is evaluating aircraft for government contracts. During a test flight Peggy and the lieutenant are caught in a sudden storm and take refuge at a nearby farm where Peggy heroically saves a child from a fire caused by lightning. Meanwhile the Mortlake Company with its secretive operations is suspected of foul play. The plot thickens when a robbery occurs at the farm and suspicion briefly falls on the Prescotts. However it is revealed that Mortlake and Harding have ulterior motives and the Prescotts must navigate these challenges to protect their developments and reputation. The narrative combines elements of mystery competition and the pioneering spirit of early aviation highlighting themes of courage integrity and the pursuit of dreams.