In this controversial French drama, Loic (Jeannick Gravelines) is a photographer who is trying to leave his working-class background behind and make a name for himself as an artist. Loic's best friend Tony (Emmanuel Nicolas) has become involved with both hard drugs and Loic's former girlfriend Virginie (Karole Rocher), while man-about-town Vincent (Nils Tavernier), who has plenty of connections in the art community, has developed a keen interest in Loic's sister Sophie (Emma de Caunes). However, Loic and Sophie are very close -- perhaps closer than a brother and sister should be -- and Loic is not comfortable with Vincent's obviously sexual interest in her. Emma de Caunes' performance in Un Frere earned her a Cesar Award (the French Oscar) as Most Promising Actress of 1997.