Twenty years have passed since the events of Alloy of Law. Eighteen years ago, the Return came. The sun went dark at noonday, the Earth shook, and ash fell from the heavens. For an hour, the world trembled in fear- and then it stopped, and all was well again. Well, but not unchanged.
They first appeared a few months after that day. They flew through the night, metal flying at their command, strength unapproachable by ordinary humans, commanding the emotions of others. Beings who could burn not just one metal, but all metals.
They called themselves Mistborn.
Others came, some who wore all the metalminds at once, to devastating effect. Those who lived by the Pits of Hashin noticed the crystals beginning to grow again. And every so often, a man or woman might come by with a spike that should have killed them driven through their body.
The Mistborn and Feruchemists acted according to their own devices, some settled down and vanished into the populations of the cities, some took over towns out in the Roughs. The potential for Mistborn mysteriously returned to the population, many of those who suddenly discovered their new abilities were snapped up by the local Houses, those who had grown up poor more than happy to wield their abilities for the small fortunes the nobility was willing to pay.
The world is changing. Spinning out of control. Some seek power to rule; some seek power to protect. What you choose is up to you.