Roman is a convict serving his sentence in a rural Nevada prison where, as part of his mandatory rehabilitation, he is forced to participate in an "outdoor maintenance" program. After a veteran horse trainer takes a special interest in Roman, he is accepted into a wild horse training program. There, Roman comes face-to-face with his own humanity in his desperate attempt to train an unbreakable mustang. "The Mustang," in theaters Mar. 15, 2019, is rated R.