This story is a sequel to One Changeling, in a World of Foes

Warning! Early story. Bad grammar inbound!
Several seasons have gone by since Thoraxis decided to stay in Ponyville, and life there, surprisingly for the most part, has been pleasant for him. He has made a few friends, love is easy to acquire and devour, and everything seems to be, for the first time in his life, easy and without worry.

Skia, Thoraxis's adopted, changeling daughter, senses something that may be missing in her foster father's life. He states, as the history books do, that changelings can only feed off love, and cannot feel or experience it for themselves. Always the young one with an ambition to change history, Skia undertakes the task to prove the facts wrong, and, much to Thoraxis's ire, she successfully sets him up on a blind date in the Crystal Empire.

Only, heh, there's one, eensy-weensy, teeny-tiny, minuscule problem with the date he's sent to meet.

She's a wyvern.

Oh, and not long before setting the date up, Skia encounters a strange, injured creature, from another realm entirely, in the middle of the Everfree Forest, and another adventure is found with it.

But not all is well. Unbeknownst to anypony, Vile Faux, a changeling so evil, twisted, depraved, and despised that he was cast out of the changeling hive, is tasked by Queen Chrysalis herself to hunt down the two "traitors" that have willingly associated themselves with the ponies, and... "dispose of them" in the most heinous way his sick mind can imagine.

So I guess there's that.

(Crosses over with the Dark Souls series. Don't look at me like that, I was going through a phase!)