某电话交友俱乐部店员荻须（佐藤干雄 饰）是一个饱受性欲煎熬之苦的羞涩小男生，在店长クニ（远藤宪一 饰）的带领下，他们却掀起了一场“旨在改造社会不良风气”的“援助交际扑灭运动”（实为“买春不付钱”），疯狂享受免费性爱。但是本性变态的クニ经常对援交女孩做出伤害的举动，恶名昭著。被害的女孩们决心复仇，倒霉窝囊的荻须最先落入圈套，被女孩及其男友狠狠整治了一番。而针对クニ的罗网也慢慢张开。变态VS援交女孩，最终谁将取胜？影片改编自漫画家山本英夫的同名漫画。

Tokyo’s Valentine Call is a special kind of phone club. Older salarymen pay to wait for calls from teenage girls, discreet meetings are arranged, and handfuls of yen are exchanged for a quick session of enjo kosai, or paid sex with a high school girl. Plenty of girls are doing it—some to make money for fancy, fashionable clothes and accessories, others to set a trap to rob and brutalize the old perverts. But the Valentine Call staff, horny young Ogisu and the vaguely sinister, makeup-coated Mr. Kuni, have a nasty plan of their own. Listening in on the enjo kosai calls, they conspire to trick the girls into giving them free sex. Mr. Kuni even has a twisted concept behind this scheme. He calls it enboku, his campaign to humiliate the teenage girls, drive them away from prostitution and purify Japan.

Una ragazza attira uomini anziani e li porta in un sudicio appartamento con la promessa di fare sesso. Lì interviene il suo ragazzo, che inizia a pestare a sangue e a umiliare gli uomini, quindi pianta un chiodo nelle loro mani e li rapina...