From publisher blurb:
These four adventures are the third act of a steam & spell campaign for Dungeons & Dragons 4th edition.
Darkness falls across the world, and the once-hidden Obscurati proclaim a new Age of Reason. As they seize power, however, prophecies of diverse doomsdays come to life, ancient titans rouse from slumber, and a vast and hazy form in the heavens above looms ever closer.
Now the spies and investigators of Risur must shoulder the defense not just of their nation, but all the world's peoples. The power of fate has been undone, and now it is their free will that will determine the course of the future, the spirit of the age. The zeitgeist.
This tome contains Act Three of ZEITGEIST: The Gears of Revolution, a cinematic adventure path designed for experienced Dungeon Masters. Witness your party - members of the Royal Homeland Constabulary - wield the epic power of 22nd through 30th level characters as battle the dominion of the Obscurati to retake control of their world. Take a step away from traditional fantasy, and lead the charge of the revolution!