Mira, a disenchanted American actress dealing with a career slump and a recent breakup, travels to France to take on the role of “Irma Vep” in a new version of the classic French silent film “Les Vampires.” As she navigates the intense world of a gripping crime thriller, Mira finds it increasingly difficult to separate her own identity from that of the character she portrays, as the lines between them start to fade.