It's time for the fair in Canterlot City, and after looking for her for some time, the girls learn something about Fluttershy they never knew about before. (Set After 'A Little Birdie Told Me')

When Sunset invites her friends for a movie marathon to start off their summer they will be involved in a inter-dimensional struggle of race, conquest, and even friendship as they have to avoid monsters and find a way back home.

Cover art by Chofki

Join the Main 7 in a series of adventures to discover the magic and the true meaning of friendship.

Sunset Shimmer: She’s someone who already tries to do the right thing. This is an Equestria Girl loving and caring for all of her friends. Friendship forever!
Twilight Sparkle: Clever and curious, this Equestria Girl is always ready for a new challenge!
Fluttershy: Though shy and soft-spoken, this kind-hearted Equestria Girl will stand up for her friends no matter what!
Applejack: Sincere and self-confident, she is an Equestria Girl who stays true to herself!
Rainbow Dash: The ultimate team player, this Equestria Girl enjoys having fun with her friends!
Rarity: Trendy and fashionable, this Equestria Girl is all about generosity and fabulousity!
Pinkie Pie: Entertaining and energetic, this Equestria Girl always makes sure her friends are having a great time!

*Disclaimer: Every character in this is owned by Hasbro not me.*

The description was from the MLP or Hasbro official channel of MLP vids except for the first part and Sunset Shimmer bio.

Now available to read on Offprint

This story is a sequel to The Hearth-Warmers of Canterlot High

After a fun-filled Winter, which included a dramatic snowball war and a souffle, Sunset Shimmer is hoping that this Spring will be a mostly peaceful one.

Given all the adventures, mishaps, and mayhem (magical and otherwise) that she and the Rainbooms have gone through, who could blame her for wanting the break that they have been enjoying to last a little longer?

Life, as if responding to that desire with a snicker, sends the girls revelations, mysteries, magical antics, and blasts from the past to test them and their friendship at every turn.

Sunset will wish she hadn't jinxed things.

Current Spot in the Friendship is Worth It Timeline:

When Life Gives You Snow...
Holidays Unwrapped
The Hearth-Warmers of Canterlot High
Spring Surprises

Series Details and Full Timeline