[1][2] Kiwa Funaki is a young successful kimono designer working at her family's Kyoto-based business.
While she fends off both the admiration of young painter Goro and the obtrusive advances of business partner Omiya, she eventually falls in love with scientist Takemura, who is writing a paper on the Shojobae fly.
After she has started an affair with him, Kiwa learns that Takemura has a wife terminally ill with tuberculosis.
Night River was released in Japan on 12 September 1956[1][2] and shown under the title Undercurrent at the 1957 New York Japanese Film Festival.
[5] Night River was screened at a 2012 retrospective on Kaneto Shindō and Kōzaburō Yoshimura in London, organised by the British Film Institute and the Japan Foundation.