From the introduction:
It is the last days of the Great Insurrection, the vast empire of the Fallen Masters consumed in a bloodbath of death and destruction. Before the walls of Nem'haleen, the last stronghold of the Trell'sara, the Armies of the March await the command to destroy the final vestiges of a corrupted and cruel empire. You are a Jotun warrior, commander of an assassination crue under direct command of Qirion'Delving, leader of the Insurrection and soon to be named First Hammer of the World. In these dark days of blood and death you are given a mission. Your soldiers are to enter the besieged fortress and hunt down the one remaining leader of the forces loyal to the old Masters, a Hresh General known only as the Butcher. The remaining Masters will be left to the Armies of the March to dispose of. The Butcher is to be your responsibility alone.