From the city of Luthadel, the Dark Lord has ruled with an iron fist for over a thousand years. The Final Empire is such a disaster, that the legends of the days when trees were green and the sky was blue seem like a ridiculous fairy tale. The skaa are so oppressed that they aren't even considered to be people by the nobles. Kelsier is their champion, whether they like it or not. He was born a skaa but has the power of allomancy (the ability to manipulate metals to have incredible powers). Kelsier is a Mistborn, a rare type of allomancer who can use more than one type of metal. Kel knows that he can't put his plan in motion alone so he assembles a team of the most powerful allomancers for each type of metal. Through his search he comes across Vin, a teenage girl with remarkable abilities. Together they may accomplish great things but not without tremendous loss.
Brandon Sanderson does a fantastic job of creating an unique and believable world with characters that are very likable. Final Empire is the first of the Mistborn trilogy.