When a maid goes berserk and tries to slaughter everyone with a feather duster, something is clearly afoul within the ranks of the Cleaners. As bodies begin to create quite the messy heap, it's only a matter of time before the whole company is consumed by the madness.
Strange forms of Corruption strike in the heart of Denver, transforming swaths of parks and neighborhoods into lifeless deserts and turning everything and everyone caught in the phenomena to sand. Can the Cleaners stop the disasters before the whole world tuns to dust?
When Ben gets trapped in the mystical labyrinth of the Sewers on a fact-finding mission to discover the truth behind his wife's death, Dani launches a do-or-die assault on Scum territory to bring him back. But even helped by a squad of elderly window-washers, it's going to require some mighty strength and sacrifices to survive the perils of Corruption's ultimate underworld.