The Dragonborn, a legendary warrior capable of absorbing a slain Dragon's soul, and knowledge, directly, forever killing it. The Last Dragonborn had defeated the first, stopped the plans of a Vampire cult, and built his own lakeside home, before finally slaying Alduin the World Eater and fulfilling his fate. Now, after all the challenges he has faced, the Dragonborn is sent to a realm where Friendship is Magic, and there is no mead. Finally, to cap things off, he kind of... well...
Became a Dragon.

Aviana, Holy City of the Eastern Mountains, and home to the Scepter of Harmony, is attacked by a powerful and dark wizard's army. Fearful of the Scepter falling into the wrong hands, the Duke orders a portal to a safe realm opened, so that they may escape and protect the artifact from the wizards clutches. There they find a ruin they may be able to fortify themselves in, but their appearance in the ruin has attracted the attention of Equestria, and the powerful mage they left behind has not given up finding his prize.