When Twilight's portals release Tirek into the human world and the humans get turned into ponies, they have to unite with their ponyselves to defeat him and save both world's.
After losing her family in a fire, Sunset wanders the streets of Canterlot, doing what she has to do to survive. She finds a fellow filly on the street and the two work survive together.
Alone on Valentine's Day, Sunset is refusing to admit to herself she's upset about her relationship status. Trixie is a bit more bitter about her own lack of a relationship.
In the year 3500, advanced technology had revolutionized the lives of ponies, introducing an era of unparalleled comfort and ease through the ubiquitous presence of robotic companions known as P102s.
Sunset as the rest of Equestria is looking forward to the summer sun celebration until the main attraction goes missing and Sunset is determined to get her back.
It's summer of 1987 and Mayor Mare decides not to run for a fifth term. With some drunken encouragement from Vinyl Scratch, Octavia stands up to challenge Filthy Rich to keep her new hometown from being sold out to corrupt big business.