While the others are relaxing at a hot spring, Rin is freezing while trying to travel the rest of the way to her destination. And when she gets there, she finds out the hot spring is closed, and the fog is blocking the vistas... she's not having a good time lol. Then she starts walking up Mount Takabotchi, and finds some better views where the fog is cleared up, and then finds the perfect spot to sit and have a camp meal ontop of a cliff.
The others fall asleep at the hot spring and get to their camp site later than expected, then they set everything up and watch the fire and eat Nadeshiko's curry.
Nadeshiko stays up late to talk to Rin instead of going to sleep, and then she goes out to get a picture of the nighttime view of the city from ontop of the cliff to show to Rin... and that convinces Rin gets up out of bed and goes back up Mount Takabotchi to get a picture of the nighttime view from there to send to Nadeshiko in return.
Nadeshiko puts up photos of their camping trip in the club room, and wants to eventually cover the entire wall with camping memories.