Now in her 70s, Isadore (Bélgica Castro) begins to realize that her mental faculties are failing. However, she's determined to hide this fact from her domineering daughter Rosario (Claudia Celedón), whom she fears will take advantage of her. Indeed, both Rosario and her no-good druggie girlfriend (Catalina Saavedra) would like nothing more than to steal Isadore's flat. But Isadore also shows some cunning in this black-humored domestic farce.