A patient at a hospital has become a ghost. Mizuki, a company employee, is entrusted with the task of investigating the cause. His investigation leads him to a couple who claim to be the "last survivors of the Ghost tribe".

Kitaro's first love, Neko, is dead. Kitaro is devastated and tries to go to Hell to see her, but someone steals his chanchanko. The culprit is the fake Kitaro. The fake Kitaro walks around Hell with the chanchanko and plots with Nezumi-Otoko to obtain a large sum of money. Kitaro's father, Medama-Oyaji goes to hell and tries to bring Neko back.

The Brigadoon, a supernatural phenomenon similar to a typhoon, has struck Tokyo. There is a world where only yokai live. Shigeru Mizuki's family, the only humans left, experience joys they could not have in the impoverished human society. Thus begins a period of strange unrest.