A woman named Chieko Kuwano (the beautiful Junko Asahina) is hired as an assistant manager at a large corporate office in Japan. She's smart, sexy, and willing to do almost anything for her sex-starved new boss but, since he's married, his deviant behavior makes her uncomfortable. Fed up with the boss and his perverted ways, the ladies in the building band together to enact their own special kind of revenge... that is, after they have a lesbian three-way slumber party, of course! HORNY WORKING GIRL: FROM 5 TO 9 will have your libido working overtime!