Based on the H-game Suiheisen Made Nani Mile? - Deep Blue Sky & Pure White Wings

The Space Science Club famous for constantly loitering about has finally exhausted student council's patience. Now in order to stay active it has to participate in the world's first contest themed "flying using electric and wind powers only".
To do so, protagonist and his friends must win a competition with aviation club which is one of the best in their academy. They have no choice but to start modifications on a light glider under the leadership of their new adviser. The summer they won't be able to forget starts now...