With the war between the humans and monsters finally over, the Berzerkers are now fighting to preserve the fragile peace in the land of Bailiwick. When Barb and Porkchop arrive in the city of Skulladune, they find monsters and people at each other's throats over the silliest things and do their best to shut the conflict down.

But there's a sinister shapeshifting force at work who seeks to possess the Ghost Blade, and she manipulates Barb into entering Skulladune's notoriously brutal contest to become the city's marshal and then tricks Porkchop into entering, too. Soon, the Berzerker and the yeti are facing an evil gelatinous cube, a sewer labyrinth, an epic sausage-eating contest, and more. Can the best friends find a way to work together, or will they be forced to take each other out?