Having single-handedly put the Chaos-corrupted inhabitants of Loughville to the sword and flame, Witch Hunter Magnus Gault backtracks along the tainted river to find the source of the corruption. Gault's quest ends at the village of Mittlesedorf, which he finds miraculously untouched. However, there is a worm in the rotten-apple, and even Gault may not be a match for the foes that await him!