Unhappy with his food-tasting job, samurai Shinnojo Mimura (Takuya Kimura) dreams of opening a martial arts school for boys. But when eating toxic shellfish leaves him blind, his hopes for the future are dashed. Learning his wife (Rei Dan) has been forced into sexual favors in order to secure a stipend, Shinnojo works to revamp his sword skills and seek revenge. The film is the third in a series from director Yôji Yamada.