正在播放的是《未知方程式》的高清完整版。该片是由著名导演Francis Savel 的一部精彩的伦理 类影视作品，主演有Gianfranco/Longhi/Jean-Jacques/Loupmon/Reinhard/Montz/等，本片主要讲述的是　　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

同时该系列还有以下影片值得推荐：《欲望悬流》《午夜性运行/午夜疯狂》《情人与亲眷/Peccato veniale》《花花公主/假戏真情》《爱在欲望蔓延时 외도에 빠진 아내》《華麗的外出》