When a Yakuza boss named Anjo disappears with 300 million yen, his chief henchman, a sadomasochistic man named Kakihara, and the rest of his mob goons go looking for him. After capturing and torturing a rival Yakuza member looking for answers, they soon realize they have the wrong man and begin looking for the man named Jijii who tipped them off in the first place. Soon enough Kakihara and his men encounter Ichi, a psychotic, sexually-repressed young man with amazing martial arts abilities and...

A married silkworm smuggler, Herve Joncour, in 19th Century France who travels to Japan to collect his clandestine cargo. While there he spots a beautiful Japanese woman, the concubine of a local baron, with whom he becomes obsessed. Without speaking the same language, they communicate through letters until war intervenes. Their unrequited love persists however, and Herve's wife Helene begins to suspect.