Elementary schooler Yuuta, who lives next door to Mana, gets the story of Kitaro out of her and goes to the GeGeGe Forest. It's been a few hundred years since the last time a human came to GeGeGe Forest. Kitaro tries to send Yuuta home immediately, but, pressured by the Sand-throwing Hag and Daddy Eyeball, he reluctantly allows Cat-girl to show him around the forest. Yuuta is quite knowledgable about yokai and is overjoyed to see all the different yokai in the forest. Then, suddenly, the forest changes! Kitaro and the others are attacked one by one. Daddy Eyeball says that Yuuta is the cause of it, but...!?

Kitaro arrives with a clip-clop in a lonely village deep in the mountains where Masae lives. The one who called Kitaro is Masae's only son, Sho, who lives in Tokyo. Sho says that Masae is possessed by yokai, but after Sho willfully flew out of the house, she won't listen to anything he says. But Masae's body grows steadily weaker, and if things are left like this, it will soon be a matter of life and death. Will Kitaro be able to get rid of the yokai that clings to Masae...?