The film follows Min-Woo, a photographer for an investigative journal, through several weeks of his life after a chance encounter with Jae-hee, an old friend from college days. Jae-hee, now a married businesswoman, makes an unusual proposition to Min-woo. She wants to have an affair, but limits it strictly to only nine encounters. Min-woo agrees to this only to find old feelings awakening within him as the affair progresses. He is also increasingly plagued by dreams and visions of a young woman, apparently the woman who lived in his new apartment just prior to his arrival.
