A chance meeting draws the shady Otsuki to the home of a master calligrapher, where he is subjected to a bizarre pornographic movie in which shots of a teenage girl alternate with close-ups of insects. Otsuki is then introduced to the calligrapher's attractive granddaughter, the star of the film, and is asked to shoot the remainder of the work himself. A metaphysical thriller, surreal noir, and "moral tale" gone wrong, Triangle is an unsettling peek into the dark and irrational reality lying beneath a city.