The changeling hives have always warred with each other to cull the weak. With Twilight Sparkle's announcement still echoing with the other hives, it is time once again to separate the chaff from the wheat.
During a mountain hike, the girls only pack three large sleeping bags, and Rainbow Dash has to snuggle overnight with Applejack. This would be totally easy if she didn't crush on her so hard that she'd rather toss herself into the campfire