健太郎被发现偷窥他的新继母在浴室里自慰，这导致了他们之间的秘密关系。一开始，跨越禁线是件很沉重的事，但当这位新手妈妈感受到健太郎年轻的身体后，她就再也忍受不了了。相反，她最终责怪丈夫每天加班并且深夜过着无性生活。由于父亲下班回家很晚，健太郎和他的新继母每天都发生性关系
一个兼职工人被一个顾客迷住了。当她被解雇和沮丧时，她会找一个新的伴侣来寻求安慰。
This long-lost masterpiece of hardcore gay erotic cinema centers on a handsome young stud who rides his motorcycle through myriad sexual encounters, from a soccer game’s locker room to a phantasmagoric and deeply melancholy orgy. A labyrinth of all-male fantasies whose outstanding beauties always end up fading away while leaving their sensual protagonist dealing with his own loneliness, EQUATION was directed with supreme grace by the mysterious Dietrich de Velsa (aka Francis Savel/Frantz Salieri). A former painter, de Velsa was also the owner and artistic director of La Grande Eugène, one of the first drag cabarets in Paris. Years later, he collaborated with Joseph Losey on MR. KLEIN (1976) and DON GIOVANNI (1979). His one and only film, EQUATION TO AN UNKNOWN stands as one of the most extraordinary erotic films of all time. “The most melancholic porn film I’ve ever seen. It’s very sad, and aesthetically beautiful. Just a young man wandering through several depictions of love and choreographies of love-making; it’s like a ceremony, a ceremony of fantasies, especially the last sequence where the main character recalls all his previous fantasies, which come one by one around his bed and make love to him. I think it’s one of the most beautiful film sequences of French cinema.” –Yann Gonzalez
为了逃离回忆与都市喧嚣，高介（永冈佑饰）在山中小屋避世而居，但是他邂逅了青春洋溢与野性魅力的汐里（间宫夕贵饰），因此也堕入了难以自拔的欲望漩涡。
林家搬到了爱夫妇隔壁。从他们第一次见面开始，当他去孩子家迎接林时，孩子就公开引诱林。小孩告诉林，自己和他是同一个班的，以后再也摆脱不了他了。此后，Hayashi 所到之处，都会出现一个孩子。孩子刺激了Hayashi并和他发生了性关系。此后，孩子会去到 Hayashi 所在的地方并和他享受性爱
和世界上大多数夫妻一样，玛尔塔（安娜·金斯卡娅 Anna Jimskaia 饰）和丈夫达里奥（马克思·帕罗蒂 Max Parodi 饰）过着简单而平静的生活，可是，从某些角度看来，平静等同于乏味，而这乏味让玛尔塔的心中时常燃烧着欲望的火焰。随着火焰越烧越烈，玛尔塔的痛苦也随之增加。渐渐的，玛尔塔的精神世界开始失控，她与每一个看得上眼的男人们共享着鱼水之欢，在梦境里，在幻想中，而每当此时，达里奥总会身着风衣手持枪械打破玛尔塔的幻想。 随着时间的推移，玛尔塔逐渐的迷失在了现实和幻想的交界线上，她终于背叛了自己的丈夫，有了一个年轻的情人。几经思量，玛尔塔决定和情人私奔，可是在丈夫熟悉的身影前，她又陷入了犹豫之中。
她的朋友玛丽卡向她求助，因为她的丈夫有外遇。在由莉和玛丽卡的三人会面中，她看到了光子巨大的阴茎，于是背叛了朋友，并勾引了光子。在用自己的身体确认了光子的能力后，她失去了理智，承认了朋友的丈夫，甚至试图进一步发展这段关系
