The year is 437, the place is Worms, and you are Attila the Hun, history’s most guy. After waging a long and bloody war across the length and breadth of Gaul which cost the lives of your uncles Octar and Ruga, the Burgundians and their proud king Gundahari have at last capitulated to Roman authority. However, the magister militum Flavius Aetius, your best friend whom you’d never ever betray, has plotted cunning treachery. The Romans believe Gundahari is too proud and even still too powerful to fully be trusted, and so Aetius has offered you a substantial sum of gold to do the thing you were already going to do anyway: In vengeance for your slain sovereigns, kill every Burgundian you can find and burn Worms to the ground.
If the enticements of bribery and vengeance were not enough, legends also tell of a vast treasure-horde secreted somewhere in the region, a trove of unimaginable wealth in gold, silver, and artifacts. The legends also say the treasure is under a dragon’s curse and will kill anyone who tries to claim it, but that’s probably nothing to worry about, I’m sure it’ll be fine.