All flying island states are forced to stop strife and unite in the face of a common threat from the west. The huge empire sends an expeditionary force through the mountains to destroy the Glued Kingdom first, and then the rest of the "heretics." The combined army withstands the hardest battle, in which it actively uses all the accumulated new weapons. Having defeated the enemy, the main character confirms the received rank of admiral and leads the best soldiers in a retaliatory raid. After the conclusion of the war, he returns home to create a school of air captains and begin a peaceful life.