When an Excalibur warframe's linset's engines explode causing a dimensional rift and ends up in Equestria shortly after the 1000th summer sun celebration, he must save the lives of the mane 6 from nightmare moon. However will his past sins and inner demons return to haunt him?

WARNING! This story will contain spoilers on the Second Dream quest and some of my own interpretations on the hidden and fragmented lore of Warframe. If you have not completed the second dream quest the I highly recommend playing through it first!

After discovering a new planet, the Tenno, a race of warriors, master of gun and blade and the warframe, and Lotus, the adviser, travel to find a brand new world with a species they've never seen. Unfortunately, they were followed. The Grinner, a ruthless military organization hell bent on wiping out the Tenno, arrive to find their enemy and an ally to them.

Now the Tenno are not only fighting for their lives, but for the ones of Equestria as well.

They used us, They destroyed our home, our family and friends, burned in the fires of war and greed. I'm Excalibur and unlike most, me and my team hunt down relics of the Orokin.

But after one mission almost killed me and stranded me on a planet from the distant past. I need to become the hero again. But I'll soon learn what it feels to have friends again and maybe even more.

But I don't know if I'm ready to forget the past and I don't think the past is ready to forget me. This is my story of how a group of idiots saved the world from utter chaos.

NOTE:
this story will take longer for updates due to my priorities being set on the Main Story's progression.
this also does not tie in with the main story in anyway besides from a few short appearances.

WARNING: CONTAINS STRONG LANGUAGE

Also the cover art was something I found on the internet I only added the name.

SPOILER!: This contains lore and what the Warframes really are. If you haven't played the Second Dream quest and don't want to be spoilt, do not read until you complete it.

My name is Karn, it's been over one-thousand years since I became a Tenno.

I've faced all sorts of horrors and challenges.
The grineer, a race of clones, seeking out others to stabilize their own DNA and hating anything or anyone not like them.
The corpus, a conglomeration of commercial and industrial interests, they acquire Orokin technologies and warframes to trade and sell using any means necessary.
The Infested, an ancient plague created by the Orokin to combat the 'Sentients' but has spread throughout the system.

Me and the new Tenno Greavus who uses the new Nekros warframe were sent to assassinate a grineer general, but Greavus struck a deal with the grineer and left me within the ship while the grineer tried to take my warframe for experimenting. Long story short, they failed.

I barely managed to escape to the void in an attempt to take down Greavus, but my Orbiter and Liset are damaged during flight.

My Orbiter exits the void right above a bright planet. With its engines down, the ship crashes right into a city on a mountain during an invasion.

I arm myself and leave the Orbiter, but for the first time in centuries, I'm not prepared for what greeted me... Small colourful equines.

Warframe/MLP crossover, image is my rhino warframe and the one used in the story.