 Based on the Alessandro Baricco s novel this is the story of 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.