The story is about Mai Iwakura, a heroine who has a longing for the sky and pilots and never gives up on pursuing her dream. The story begins in the 1990s and ends in Higashiosaka, Osaka Prefecture, which is famous for its manufacturing industry, and in Nagasaki and the Goto Islands, which are rich in nature. Even if you aspire to become a pilot, you must face the harsh reality and find your dream of the sky in a new way.