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.

Nadeshiko pays a visit to her school's Outdoor Activities Circle, consisting of two members; Aoi Inuyama and Chiaki Ohgaki. The girls attempt to put together a cheap tent only for it to break on them. They are helped out by Rin's friend Ena Saitou, who draws Nadeshiko's attention towards the fact Rin also attends her school. Later, as Rin goes on another solo camping trip, Nadeshiko, having been informed by Ena, goes over with some hotpot.

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.

Nadeshiko's group takes a nice relaxing dip in the hot springs, almost succumbing to the urge to eat before they reach their campsite. Meanwhile, Rin arrives at the Takabotchi Highlands and is overcome by a desire to go to a hot spring too, only to discover the nearest one has closed down. Dejected, Rin decides to climb up the peak, where she is rewarded with a lovely view, before finding a spot to cook some pasta. The club finally arrive at their campsite, where Nadeshiko makes curry for everyone. While the others are asleep, Nadeshiko goes to take a picture of the city lights to send to Rin, who goes to the summit of Mt. Takabotchi to send her a similar view in return.

Chiaki shows off a wooden bowl and skillet set to Aoi, which she learns must have the lacquer finish removed in order to place hot food inside and be seasoned, respectively. As they work on this, Ena visits and the three talk about their new substitute teacher and camping after exams. Nadeshiko, Chiaki, and Aoi later visit an outdoor sporting goods store in Minobu, Yamanashi, where Nadeshiko declares her intention to get a job to buy a gas lantern.

Nadeshiko plans to go camping with Rin, but catches a cold the night before and has to stay at home. As such, Rin decides to go on her own to a campsite at Ina, and attempts to take a detour to get there, but finds out that the road is closed. After meeting some mountain climbers, she lets Nadeshiko and Chiaki decide where she goes next, and visits a temple and a hot spring before eating at a restaurant and oversleeping. Meanwhile, Chiaki visits Nadeshiko at home and cooks houtou for her family.

Rin oversleeps and is rushing to her campsite when she encounters a roadblock. Upon being told by Chiaki that it may have been left there and never moved, she proceeds and reaches the site, where she struggles to set up due to the windy conditions. Nadeshiko, Chiaki, and Aoi plan their Christmas camping trip and invite Rin, who initially refuses before being convinced by Ena to accept. Toba, the new teacher, is unintentionally lured into becoming the Outdoor Activities Club advisor and is invited to the Christmas camp. Upon hearing Toba mention bringing beer along, Nadeshiko realizes she was the drunk sister from the Lake Shibire trip.

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.

A short story that takes place before Nadeshiko joins the Outdoor Activities Club.

After jumping out of a plane, the Outdoor Activities Club members become stranded on a desert island.

Rin assumes fishing duties and catches some large ones. Both Nadeshiko and Chiaki adapt to the scenario in a different manner.

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.

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

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.

The Outclub girls decide to make a day of camping in Ena's yard to cut Aki's hair and try out their new DIY alcohol stoves. Meanwhile, a new camper takes some smaller trips for herself and starts dreaming big.

On their way to meet up with Nadeshiko for a three-girl camping trip, Rin and Ayano bike their way around Ikawa to see the area's impressive array of suspension bridges.

Rin and Ayano bike their way up treacherous mountain roads and cross terrifying swinging bridges to make it to the campsite. While she waits for them, Nadeshiko takes in the sights and manages to find a scare of her own...

Nadeshiko takes it upon herself to prep the campsite, as well as a few treats. When the other girls finally make it, it's time for a campfire and a camp-worthy feast!

The three-girl camping trip is winding down, but Rin, Ayano, and Nadeshiko are determined to see everything there is to see and eat everything there is to eat before it's over!