THE MUSTANG Trailer Debut Watch the first THE MUSTANG trailer! The film, directed by Laure de Clermont-Tonnerre, stars Matthias Schoenaerts, Connie Britton, Gideon Adlon, Jason Mitchell, and Bruce Dern. THE MUSTANG will be released in theaters on March 15. MUSTANG tells the story of Roman Coleman, a violent convict, who is given the chance to participate in a rehabilitation therapy program involving the training of wild mustangs.