Upon arriving at Porto Grande, the biggest city in the land, a 12-year-old named Alto has an ambitious desire to become a pilot - but not just any pilot. Rather, he wishes to fly a plane exclusive to female pilots. In a bid to make this dream a reality, he conceals his true identity as well as his age and enrolls in a girls-only school. The question remains: what sort of experiences will he encounter within the walls of this educational institution?