Haruo Furuya

Three men are possessed by the spirits of ancient samurai determined to build their master's castle, even if they must use cardboard.

A detective investigates a series of murders. A possible serial killer might be on a rampage, since the crimes are in the same vicinity, by the same method. However, as evidence points towards the detective, a ghost in red follows him, and he begins questioning his identity. His realization of what seems to be reality results in something far larger and more sinister.