So long ago, when the dwarves finally decided to flood the whole world with magma and change the overworld into one giant fortress. With the tyrannical yet mysterious ruling strategy of the Overseer, the ultimate ruler of the Great Fortress, there had been peace
Well, kind of, anyways, there are almost constantly riots, just because dwarves tend to start trying to kill each other when bored, but like you said, almost peace. The fort didn't tear itself up in some civil war or something.
You are one of the bookkeepers spread around the fortress to count and foresee the economy, and that had freed up most of your schedule. The Overseer seems to be unable to see the difference between you sitting and calculating and you sitting and procrastinating.
You have been calculating the age of the world from the microcline statue standing by your desk. Its age ended abruptly, as if the element was conjured instantly out of thin air. And before its creation there was oblivion, then... you had a glimpse of what lied before oblivion.
The world has been reset many times, probably by The Overseer, or maybe his "Blood God"
You're on to this mystery, you do not like the prospect of ceasing to exist.
You sit in your golden study, it is a gigantic room filled with elaborate golden statues decorated with the god metal, Adamantine. The microcline statue by your golden desk was the reminder of your study when you were just starting out on this job.
The door stands at the opposite wall, perhaps you might be able to sneak out, and the Overseer won't notice. It's not like he's omniscient, or something, that would be preposterous.