A girl named Rin Shima comes to a campsite in Motosuko, facing opposite Mount Fuji, to spend the day camping. While setting up a campfire, Rin notices a peculiar girl sleeping by the public restroom, but thinks nothing of it. Later on in the night, Rin once again comes across the girl, Nadeshiko Kagamihara, who had gotten herself lost after just moving to a new house, and shares her curry noodles with her before they both get a clear view of Mount Fuji. After eventually managing to get her sister to pick her up, Nadeshiko leaves Rin with her phone number in the hopes of camping with her once again. A few days later, Nadeshiko begins attending her new school, which Rin also attends.

While Nadeshiko makes gyoza hotpot for Rin, Chiaki gets a job at a liquor store to fund the club. Enjoying the meal, Rin apologises for being cold towards Nadeshiko when she invited her to join the club and promises to camp again with her some time. After spending the night in her sister's car, Nadeshiko wakes up early to watch the sun rise over Mount Fuji.

The Outdoor Activities Club plans its first trip, but they do not have the right sleeping bags for the cold weather. Trying to cut costs, the club members try wrapping the summer sleeping bag in foil, bubble wrap, and cardboard, and ultimately decide to each purchase a winter sleeping bag online. Meanwhile, Rin gets her motorcycle license and goes on a solo camping trip in Nagano. On the day of the camping trip, the club members hike through Fuefuki, stopping at a cafe and hot springs resort along the way, and then watching a live stream of Rin.

Chiaki and Aoi check in at the Asagiri Plateau campsite while Toba sets up her grill and starts drinking. While the two eat at a nearby restaurant, Rin prepares her tent and Nadeshiko shows up shortly after. The four purchase firewood and return to Toba's table, where she has fallen asleep as Ena and her dog Chikuwa arrive. The campers and Chikuwa spend the afternoon playing frisbee with other kids before going their separate ways. At night, Aoi cooks sukiyaki for the group. When their stove runs out of gas, Rin leaves to buy more. She remembers Ena's comments about how fun a group camping trip would be, to which she smiles.

Nadeshiko tells the group what she expects them to be like in ten years when Rin returns. After bathing, the campers enjoy various movies and shows on a tablet Chiaki had brought along until they decide to call it a night. Under the stars, Rin and Nadeshiko talk about their plans for the new year before going to sleep. The next morning, the two cook breakfast and watch the Sun rise behind Mount Fuji. Rin returns to her job at a bookstore, while Nadeshiko continues pondering about getting one of her own to afford camping equipment. Ena texts her about a job opportunity delivering New Year's cards, which she accepts. In the epilogue, Nadeshiko returns to Motosuko to solo camp when she receives a message from Rin, who also happens to be doing the same. Nadeshiko proposes sending photos of their respective campsites to one another; after seeing herself in Rin's picture, she turns around and realizes they will be camping at the same location.

It’s approaching the end of the year. Rin plans a solo camping trip, while the Outdoors Club members earn cash to buy more gear.

It’s New Year’s Eve. Rin arrives at the shore in Shizuoka. Nadeshiko is busy with her temp job, when she receives a message from Rin.

Nadeshiko is spending New Years at her grandma’s place in Shizuoka. Her friend, Ayano is staying over, and Rin joins them to hang out.

With winter break over, the girls begin planning their next OutClub outing.

Chiaki, Aoi and Ena buy new camping gear, and they set out to go camping at Lake Yamanaka.

Nadeshiko goes solo camping for the first time. Meanwhile, Rin, who is out touring Hayakawa City, bumps into Nadeshiko’s sister, Sakura.

Nadeshiko arrives at her campsite and begins experimenting with outdoor cooking, when two kids show up.

Everyone is going to Izu to camp soon, and so Nadeshiko plans what to make. Meanwhile, Rin adds some new parts to her bike, when her grandpa pays her a visit.

Akari joins the other campers, and they head out to Izu. They check out various geospots and try the local food.

The gang changes course and head toward a different campsite. After they hit the hot springs, at night, Nadeshiko treats them to her cooking.

It’s the second day of the OutClub’s Izu trip. They go to Dougashima Island and walk across the tombolo, and put on a surprise birthday party for Nadeshko and Aoi at the end of the day.

It’s the last day of the Izu trip. The group visit the Iidas, who had helped them on their Izu trip and say hi to the hot spring capybaras.