Feudal Japan has been unified under the Tokugawa shogunate, and the era of the Warring States has finally come to an end. Yet there is little repose; a mysterious plague begins to creep across the land, awakening the sleeping dead and transforming the living into nightmarish fiends.
In an effort to contain the outbreak, the Tokugawa shogunate has issued Sakoku, an edict isolating Japan from the rest of the world. No one can leave or enter Japan on penalty of death.
Follow the adventures of Tatsuo the masterless samurai, Moshi the warrior monk, and Ino the fugitive ninja as they investigate the mysterious plague, tracing its origins to the rise of the emperors and the fall of gods.