Minako, a married woman who lives in a housing complex with her researcher's husband, was frustrated with her husband who was obsessed with work while neglecting the husband and wife. Imagining intense sex with her husband and comforting herself with masturbation, she meets a middle-aged man who was in front of the open window. Minako gradually opens up to this man who apologizes with her sincerity that she didn't mean anything. The two, who were never supposed to meet, will have a violent affair after witnessing this masturbation.
