Who you are is not the past choices you've made, but the ones you make moving forward.

Tempest Shadow was once a great, mighty warrior in the fallen Storm King's army who had forsaken all bonds of fellowship in favor of hatred and malice. With the Storm King's aid she returned to the land as a conqueror, bent on enslaving all of those who had shown her the same hatred that she bore deep in her heart.

In the aftermath of the Storm King's demise she is lost, she is alone, she is afraid. Everything seems so backwards to her now. Nopony is willing to help her, nopony is willing to get to know her, nopony wants to. To them she is an outcast, her only friend being the Princess of Friendship. Everything in the world seems against her. Until a chance meeting with a strange dragon, who is willing to look past her veil of darkness.

"What happens when you change so much that you don't recognize yourself? What happens when you push everypony away to fit in, even going so far as to shatter your own heart in the process? What do you do to fix everything while you still can?"

Over the years Spike and the rest of the Elements of Harmony have seen a dramatic change with Rarity, even going so far as to degrade the quality, the uniqueness of her dresses. Only after confronted by Twilight and breaking Spike's heart does she finally see what has become of herself. Determined to fix it though, she sets out across the land of Equestria to try and rediscover who she is.