There's an introductory campaign. A seven-mission hunt for a necromancer. That's it, tho.
So NW might not be a game for you.
Then again, my experience and preferences lay with 'toolbox' rule sets.
I have as many scenario ideas bouncing around my head as unpainted miniatures under my desks. So an open system not only lets me try them out, but gives me a reason to paint some of those figs.