When Mana visits GeGeGe Forest, she finds Kitaro and Ratman arguing over something trivial. They each declare for the I-don't-know-how-many-th time that they're cutting ties with each other. Meanwhile, in town, the water has been contaminated sending everyone running around looking for drinking water. No one knows why the water is polluted, and no attempts at purifying it work. Kitaro believes that the one behind the pollution incident is one of the Four Generals of Betrayal. Kitaro begins an investigation, but doesn't know how to stop the pollution of the water. Meanwhile, a survivor of the Way of the Demon Society, Isurugi Rei, begins to move again...!?
A quarter century since planning
and construction,
،مرّ ربع قرن منذ بدء التخطيط والبناء
Entgegen aller Proteste und Diskussionen
Un cuarto de siglo
tras el inicio del proyecto,
Un cuarto de siglo
tras el inicio del proyecto,
Après 25 ans de planification,
de construction,
A un quarto di secolo dalla progettazione 
e dall'inizio della costruzione,
Um quarto de século desde o
planejamento e construção
После всех дебатов и протестов,