Twilight returns to Ponyville, without the pony she sought to find, but instead returned home with a baby. An alicorn foal nonetheless. Questions are asked but Twilight doesn't clearly answer them.
She made a promise, and she intends on keeping that promise.

Step right on down and make the purchase of a lifetime! It's our very own patented Tex in a Bottle™! For 10 easy payments of 300 bits, and of course your sanity, it can be all yours! How do you use it? Just caress the bottle then set it down and you have summoned your very own Tex™! Remember, no refunds! Oh and no returns!

Sounds like the purchase of a lifetime, huh? Well for some it's not, especially if you didn't buy it.
Sunset Shimmer did not buy a Tex in a Bottle™, no, she got a free item that she doesn't want. Kinda like a kid but not.
It is now up to Sunset Shimmer to figure out who gave her this "lovely" free item, and figure out how to get Tex back into the bottle. If life wasn't hard enough without Tex, it's like having a nice bike ride through Tartarus while on fire, and having to deal with a child that wants to go to Didney Lan but you have no money so they are there riding a bike with you in scenic Tartarus.

In the land of Equestria, where the kingdom? Princessdom? Eh whatever, is ruled by princesses distinguished by their mighty horns and wings. Each princess minus Luna and Flurry Heart (because what baby has a castle), has a castle of their own.

After receiving a false call from the magic table, Twilight returned to discover her castle was taken by the god of chaos, Discord. Now, she must take back her castle so she can lock herself away with her books for a day, or maybe a week.

"WTF did I read?" - GRRM

"Maybe I should've stayed dead." - Jon Snow

"Didn't happen like that." - Ramsay Bolton

When Rainbow Dash's folks are gone, she raids their liquor cabinet. Unfortunately for the poor students of Canterlot High, the inebriated Dash finds her way to school. All reason is lost as the star athlete goes missing after her friends confront her about her being drunk. It is up to Sunset Shimmer and the others to find Rainbow before something bad happens.

There is one thing on everyone's mind as the search throughout Canterlot High widens, "Where in the world is Rainbow Dash?"

After discovering a spell and studying everything about it, she tries it out. Unfortunately for her friends they are caught in the spell's effectiveness radius and are carried into the wondrous world of A Tune of Snow and Flames.

Twilight, Rainbow Dash, and Spike are together however the others are scattered in different parts of Equesteros. It is up to the three to gather the others to bring friendship to a world where friendships are not lifelong and where hygiene is optional. Then hopefully escape the pages of a most gruesome story.

Or

They will be kept in this world to live out their days as characters in a book. Forever claimed by the book.

One day Apple Bloom decides she wants to ask her sister about certain things pertaining to "the Birds and the Bees". This takes Applejack by surprise but she sits down with Apple Bloom to have the Talk. Feeling uncomfortable she calls in a favor from a peculiar stallion, whom she saved. Anyways it's their tag team explanation of "The Birds and The Bees".

It should be as easy as pie...right?

All inspired by one of my random tweets about how I would suck at giving the talk to a kid. So ultimately this is how I would give the talk...minus AJ.

Everything was peaceful until the alien invaders started to take over. The ponies of Equestria couldn't fight back the forces of the invaders, after seeing the atrocities some of the invaders converted and started helping the ponies by designing weapons, armor, and other technological things.
As things progressively get worse, it is up to the newly established PNSC to give everypony a fighting chance.
This is the introductory story in the world of Ponies vs. Warlords. A first "pony" view from Applejack. You will follow her story as she goes from one of the best to being the lone survivor of Project War Pony.

*NEW
Hey guys, just cause I don't feel like writing in first "pony" the whole time I will be going third "pony" every once in a while. Because I can, there will be certain parts where the CMC will make their cameos. I decided to write the parts so I can get a break from first "pony" view. CMC shenanigans would be quite entertaining.