The Canterlot Caverns are a strange and enigmatic place, untouched and forgotten by pony-kind for centuries. So when a strange metal object is unearthed in their depths, it's up to Twilight Sparkle and Lyra Heartstrings to discover the many secrets it holds.

Together, the two of them will have to do their best to understand the remnants of an ancient civilization, and decipher what remains of Those Who Came Before.

The cover-image is a cleverly edited stock image, which was modified by the stupendous Corvo.
Proofreading was performed by the equally fantastical writers:
Timetraveling Pony (Who started as a proofreader when Cloud was writing this. Hats off to him for being dedicated and staying on as a proofreader for me.)
DustyPwny
Tidal
Superluminous
Night Spark
PhiliChez

And a special Thank You goes to The Sentient Cloud for allowing me the honor of continuing this great story after he retired from writing fimfictions.

As it turns out, this story is eerily similar to Lyra Heartstrings and the Hand of Man. Due to their similarity, I feel that it would be appropriate to give said story a mention.

In Equestria, humans serve the ruling pony class. Their lack of magic makes it near impossible to survive on their own, and so they depend on their rulers to protect and help them, and put a roof over their heads. But on Earth, and in many other solar systems, their strength is the pinnacle of hope, as they assist those they can in their frantic search for the ones who came before.

Near the edge of the humans' empire, The USSF Monarch stumbles upon Pony kind on Tango 126, one of the many targets during their hunt for the Precursors. Their curiosity is peaked, and John Punch, a high ranking Elite, is sent in disguised as one of the many Human occupants on the planet, to learn of their culture, and the Precursors' presence on this planet.

Now the respected veteran must face the social challenges of being thrust into a gender reversed, pony dominated society.

After years of research and study, Lyra Heartstrings publishes a guide to everything human: Lyra Heartstrings Guide to Human Culture and Biology. Unfortunately a lot of what is written is inferred, and Lyra never learned good judgement on inferences.

OC label is for fake citation within the text.
Random parentheticals containing names are meant to be Lyras citations.
Italicized text is when BonBon is reacting to Lyra's "facts."
It would be greatly appreciated if you could post recommended OC names in the comments, I'm terrible at coming up with pony names.

Compared to their past heists, this one was going rather badly. It takes an armored truck being driven by their "handler" to get the crew out of this one. But before they could celebrate yet another pile of money in their possession, one of the strangest things happens...

While all of the politicians, scientists, and the military are worrying about the portals that opened up to some kind of alternate dimension, the crew blends in with the crowds of people coming to this world full of "ponies".
But of course, the allure of more heists presents itself even here...
So it's time to load up and grab your mask. It's payday.

Ignores the season 3 finale, and as such the entirety of season 4

It had been nearly a year since you won that labor lottery. This job had quickly turned into the best thing that has ever happened to you and your family. From the Grestin checkpoint, you had seen it all; terrorist attacks, long-seperated lovers getting back together, people trying to smuggle drugs into the country...
None of that compares to the day a portal opens to an alternate dimension just outside the walls.
Which is bad, because inevitably that means more papers for you to check and double check.
But still, a job's a job. Might as well keep a straight face about it...
And remember:
Glory to Arstotzka.

Thrust headlong into a strange new world, Solaire of Astora must make amends before he can continue with his mission. Unbeknownst to them all, a shadow from his past approaches.

Kenny has escorted many of his coworkers to the Conversion Bureau, but he seems strangely reticent. Recognizing someone who has seem too much and gone too far, Twilight Sparkle wants to offer him a happier life. But he has a secret, one that most Equestrians haven't considered.

After strange occurrences with radios across the world Twilight does some research. What she finds, changes everything.

This is a story about the last human after the conversion of the human race into ponies. The last human is alone but is going to continue to live and shine, even if everything seems to be at its end.

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Expand for the Music For the Parts:

Part 1 -
I'm Alone :Inception Soundtrack HD - #12 Time (Hans Zimmer)
Final Fight and Ending :Hancock - Death and Transfiguration

Part 2 -
I'm Still Here :edIT - Twenty Minutes
Finale Battle :Time - (Instrumental Core Remix)

Part 3? -
Blinding Truth :Battlefield 3 OST "Solomon's Theme"
It Ends With Me :Courtyard Apocalypse

He had done it. The giant demon that had masterminded the invasion of Earth was dead, and Hell was in shambles. All that was left was to backtrack through Hell and go home to help rebuild the ruined planet...
But of course, it's never that easy. Just one wrong turn, and he arrives from Hell itself into a land filled with pastel-colored ponies. How will the man who had just destroyed Hell adjust to the sudden peacefulness after all he had been through? And is Hell really destroyed for good?