![Cinderella Man](https://demo.ews.pe/dooplay/wp-content/uploads/2023/02/wkeOjIcpuqLMW4GnVowlM9VI0JE-185x278.jpg)
In a post-war alternative timeline, Japan is divided into the North, controlled by the Union, and the South, controlled by the United States. A mysterious high tower rises within the borders of the Union. Three high school students promise to cross the border with a self-built airplane and unravel the secret of the tower.