As time has passed, Rin Shima, Nadeshiko Kagamihara, and their companions have matured into adulthood, juggling careers and commitments that limit their ability to freely camp and explore. However, Chiaki Oogaki, employed by the Yamanashi Tourism Organization, brings them together with an enticing proposition—to collaborate on a project to transform a neglected area in their home prefecture into a flourishing campground. Energized by this ambitious endeavor, the group unites to construct an environment where future generations can relish moments that previously enraptured them, while indulging in nostalgia for the camping joys of their youth.