The SettingA post apocalyptic world, an event in the fairly recent past has caused the destruction of most of the world. Though the event wasn't that long ago, it has quickly passed into legend as the remaining societies struggle to make due.
The City of Shadows
Fleeing from the Crawling Apocalypse, the party takes refuge in the ruins of the city. The resting through the night, the sun appears to have not risen in the morning; the city is trapped in perpetual night. Searching the city, the party finds signs of barricades and defenses long abandoned. The buildings are coated with long expired ghostwall shellac, an alchemical paste designed to render walls solid to ghosts and shadows. In a still standing inn, the party encounters a group of feral humans still at their barricades. Fighting them back, the few survivors attempt to flee to the streets only to be struck down by a large shadow beast which quickly flees. Continuing through the city, the party comes upon one building which appears to still be standing and relatively untouched bearing the symbol of a tinkerers guild. Believing it may possibly be the guild spoken of in the legend, they investigate. Fighting their way past the still active golem defenders, the party finds no survivors, but a record of the events that destroyed the city. Seeking a weapon to fight an invading army, the guild had found a a way to open a portal to the Plane of Shadow. Using an unknown power source, the city used the device to summon shadows to fight their enemy. At some point though, the device faltered and the portal remained open, turning the city into a nexus connecting the Material Plane to the Plane of Shadow. Under constant assault now, the city quickly died. Leaving the guild, the party encountered the remains of the pirates that had survived the earlier battle. Once again the party was saved from nearly impossible odds by the reappearance of the shadow beast. Combining forces, the beast and its shadow minions were fought off and destroyed by a burst of magical daylight.