The bodies of departed pets walk the earth once more. If the Cleaners don't step in, death will sweep through Clearhelm's streets.
Pen and her team retreated to the Bone Yard to lick their wounds after the destruction of their home and lose of their jobs. Their brief respite is shattered, though, when black dogs stalk the streets of Clearhelm, heralding in a prophecy that spells doom for the city. Clearhelm's Police are ill-equipped to take on this new foe as bodies pile up. They have no choice but to turn to the very people they cast out, if only they can set aside their grudge long enough to beg for help. Yet, in the Bone Yard, favors come at a steep cost. Pen and her people stand ready to save the day once more, but the price they demand could shatter the city's very foundations. Death has come to Clearhelm, and soon, all the world will burn.