One night Twilight Sparkle wakes up only to discover that somepony has destroyed something very dear to her, and she has a pretty good idea about who did it.
After Rainbow Dash has an accident with some storm clouds while planting somthing for Twilight, she wakes up in the morning seemingly unable to stand the sight of any of her friends.
While enjoying Movie Night out with the girls, Twilight Sparkle discovers what it feels like to snuggle somepony. She then makes the logical next step: attempting to distill cuddles into portable, consumable form. For science, of course.
Twilight Sparkle enlists Rainbow Dash's help in a "Fuzzy Muzzle Nuzzle" research project. The experiment only has three steps. That's not too much to ask of a close friend, is it?
In the future, we'll colonize the solar system, cure cancer, clone the human genome, and build trans-dimensional hoodies that can summon tiny talking horses from an alternate universe. It's pretty snazzy.
Flash Sentry has a breakdown upon realizing that the last two girls he found attractive were actually transformed ponies, and begins questioning his sexuality.
Sunset Shimmer, horrified at finding that the Dazzlings are back and are somehow broadcasting their song around the school, has taken it upon herself to save the day. Someone should explain to her what a fire drill is.
After the Battle of the Bands, everyone felt a bit different. Mainly they were different in how they acted: Friendlier. Sunset Shimmer, however, was just... Different.
Sunset Shimmer, in an attempt to redeem herself for past actions, volunteers to look over the costume list for CHS's costume showcase. She goes too far.
When Rainbow Dash's final grade is in jeopardy, she enlists the help of most eggheadiest person she knows. Unfortunately, she encounters a problem. A naked problem. A very naked problem. A comedy of the nudist variety.
Pinkie is forced to go to Colgate - the new dentist in town - to get her teeth checked out. Unfortunately for Colgate, Pinkie is her first customer in Ponyville - she wasn't really counting on looking at the teeth of someone like that.