Firstly, this article presents a mainly semiotic analysis of the filme Absent, by Marco Berger. Secondly, and from then on, it proposes some oblique considerations about Argentina´s Comprehensive Sexual Education Policy. In the third place, it seeks to focus these previous reflections in a perspective, actually under construction, that we call Communication Didactics. Finally, this paper is part of the concerns of the Research Team led by Dr. Ximena Triquell. In that institutional frame, we inscribe these results in a larger inquiry, whose topics include social conflicts in audiovisual discourses. In our case, the attention is centered in sexual conflicts in educational sceneries.