Many years after the original Mare-Do-Well disappeared and mere weeks after the vigilante resurfaced in Ponyville for a short time, a pegasus named Aurora, who had studied and looked up to Mare-Do-Well her entire life, finally discovers the truth of what happened to her fillyhood idol. Taking up the costume and mantle of her hero in order to protect the sprawling metropolis of Manehatten, Aurora faces crime as the Mysterious Mare-Do-Well!

When you feel like giving up, just remember that it took one titan to hold the sky, one princess to raise the sun, and one hero to save this city.