Carlos sleeps rough in an abandoned structure made entirely with walls of glass. He’s well known, and liked, by the locals, but addiction throws a shadow over everything.
In an empty theatre, a woman is watching an American film - "Ma's Sin" - which tells the weird revenge story of a middle-aged wife, driven mad by jealousy and a deep feer of dying. During the screening, the viewer's fantasies embodied in male characters harass her. Thus she will live the double...