Suguru Koshigaya strikes it lucky at the department store during a summer day and wins the top prize of four tickets to Okinawa! The girls of Asahigaoka are bursting with amazement and anticipation as they busily prepare for their upcoming adventure. Whether it be learning the art of plane travel or buying all the necessary travel gear at the convenience store, these girls are determined to make the absolute most of their Okinawa holiday. Renge Miyauchi may be leaving behind the usual scenery of Asahigaoka, but she's excited to see how this new experience will change her outlook on the world. As the departure date edges closer, the girls make a pact to savour every moment of their promised trip.