Spike learns from Magnum, Rarity's father, that she loves mustaches. So in order to impress the one he loves most, Spike sets off on a quest of epic proportion, meeting every mustached character in the series so far! Whether its under the teachings of Steven Magnet or a showdown with the FlimFlam brothers, Spike will do whatever it takes to reach the lost spring and obtain the greatest mustache of all time!
Just a note: I am taking some ridiculous liberties with character like the The Dude Lebowski, as well as others.

The crash was bad. Her wings were fractured in many spots. She wasn't going to heal in a couple days. Instead, it was going to take her 6 months. Six months without flying, there was nothing more uncool, unawesome, and unradical. That was until she chose to stay with Applejack and her family. Broken wings left a hole, one that could only be filled, evidently, by Applejack.