- HD 1080
- Runtime: 99m.
- Status: Released
0
- Languages: fr
- Country: France
- Director: Frantz Salieri
- Stars: Gianfranco Longhi, Jean-Jacques Loupmon, Reinhard Montz, Éric Guadagnan, Jean Denis
- keywords: gay erotica, gay pornography, gay theme
- Production_studio: Les Films du Vertbois
- Slogan: An Equation of Love.
- The Equation to an Unknown is featured in the top rankings of 1980
- #3 in Top Romance Movies of 1980
- #8 in Top Drama Movies of 1980
- #1 in Top Fantasy Movies of 1980
A handsome young stud rides his motorcycle through a myriad of sexual encounters, from a soccer game’s locker room to a dreamy and unsettling orgy where the film reaches its melancholic peak.