Living in a charming village like Asahigaoka is a blessing, but it's crucial to be open to exploring different places. Therefore, when Suguru receives a free trip to Okinawa at the end of summer break, the entire school, which comprises of five students, one teacher, and the owner of the adjacent sweet shop, eagerly anticipates their three-day adventure. Their itinerary promises exciting activities like kayaking, swimming, and meeting new people, guaranteeing non-stop excitement. However, the most significant aspect of the trip is the opportunity for Hotaru, a city-dweller, and her new rural comrades to experience the wonders of Japan's famed holiday destination in unity.