At some point in the near-ish future, a couple of friends and I are hoping to start a mordheim campaign after enjoying a campaign of necromunda. Unfortunately I'm completely at a loss as to an ultimate objective or mutual storyline we can follow. I usually work as a game master of sorts in these things, giving plot points and twists, but I'm a little out of my comfort zone when it comes to writing fantasy narratives (I tend to read fantasy rather than write it). I'm perfectly familiar with Warhammer background, I just can't come up with a convincing theme despite trying.
So I turn to you, Warseers, to help me create a narrative malleable enough to fit the uncertainty of the game but with scope for twists and suprises.
Some details which may help: My warband will be Middenheim Mercs, and the other two participants are playing undead (and has chosen a fluffy list of a vampire and his wolfy pets + a necromancer) and Dwarf treasure hunters.
Thanking you in advance.