By its very nature Harmony requires Chaos to exist. When Steel an explorer from outside the pony-verse arrives he throws off that delicate balance. The Eldritch abomination that had followed him to this new dimension had been rebuked but the ripples from it's approach are still being felt across the world. Steel however is searching for the rouge A.I. that stole his armor suit.

Continuation of the Out of my Element story.
Human post ponification