The film tells the story of Arnaldo (Vladimir Brichta), that to get rid of his miserable life, seeks of a clinic that promises to copy people. With a copy occupying his place, he would take a new life. But, when having his request denied, Arnaldo has no choice but to try and change the course of his history. When he falls in love with Josie (Mariana Ximenes), the clerk of a pet cemetery, Arnaldo believes that he found a chance to finally be happy. But maybe he's wrong. A Lone Man is an urban fable that addresses the complexity of relationships, with a good dose of irony, and humor.