A horror-comedy manga featuring two blue-collar factory workers and jiu-jitsu experts who face a zombie uprising in Tokyo. At the start of the story, Fujio and Mitsuo dream of training in martial arts abroad and achieving fame. After they accidentally kill their overbearing boss, they bury him on a man-made garbage mountain called Dark Fuji. There, tons of rotting garbage contaminated with industrial waste naturally transform the bodies of the dead into ravenous, flesh-eating zombies. Fujio and Mitsuo do their best to survive in this horrific new landscape, but the hapless pair get separated following an idiotic mistake involving potato chips and a stray dog. A few years later, post-apocalyptic Tokyo has evolved into a feudalistic society where the rich have enslaved the lower classes and created gladiator death matches that pit zombies against slaves. It is then that Fujio and Mitsuo meet again.