Min-Woo is a journalist who lives in the apartment of a woman who died in a car crash. Min-Woo has examined the car wreck and slowly becomes obsessed by the woman's past, also because her personal belongings were never retrieved by family. Min-Woo finds out that the woman had met a sexually confused man. At the moment when Min-woo, because of his obsession, loses grip on his own life, he meets Jae-Hee, a former female friend. He still feels attracted to her, and to his surprise she wants to sleep with him, on the one condition that they will have sex only nine times.