A girl named Rin Shima comes to a campsite in Lake Motosu, facing opposite Mount Fuji, to spend the day camping. While setting up a campfire, Rin notices a peculiar girl sleeping by the public restroom.
While planning for their first camping trip together, the Outdoor Activities Club experiments with cost-effective ways to make their sleeping bags more effective in cold weather. Meanwhile, Rin gets her motorcycle license and goes on a solo camping trip in Nagano.
Nadeshiko's group takes a nice relaxing dip in the hot springs 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.
Rin opens a package to find a mini-grill, which she dreams of using to cook various meats while talking with Ena. Nadeshiko overhears their conversation and suggests a camping trip to try the grill.
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.
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.
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.
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.
While Nadeshiko is reading a magazine, Chiaki and Aoi discuss camping customs in other countries. Aoi briefly leaves before coming back, but catches Nadeshiko's suspicion as she is smaller.
During a plane flight to Australia, turbulence causes Chiaki to panic and jump out with her friends in tow, with the five parachuting onto a deserted island.
