A serial killer nicknamed "Jack the Ripper" is murdering women in their own homes. While the media is reporting on his latest victims, Natsuko's husband leaves on a business trip. As soon as her husband is gone, her lover arrives for some quick sex. Then there's a knock on the door...
Ayaka and Saki are transfer students sent to "Girls Farm Adachi 4", a training facility that teaches girls how to have sex. The two of them possessed a transcendental technique that drives men crazy. The male employees are captivated by it, rival classmates oppose it, and the order in the farm...
