The day she became exiled was the day Equestria lost a valuable ally. And gained a powerful enemy. While fighting for her life in the desert, a group of Timberwolves find her and retrieve the Princess before she eventually dies and brings them to their leader and mentor.

But it turns out, the leader is somebody she's fought before. And neither are happy about it.

Equestria had resourses that this group wants. needs. And they're willing to fight to the death if it means taking over.

(THUMBNAIL NOT MINE. https://commandertwilightsparkle.tumblr.com/)