Shot as a movie within a movie, The Exorcism stars Academy Award-winner Russell Crowe as Anthony Miller, a troubled actor who is trying to resuscitate his career when he lands the lead role of a priest in a supernatural horror film about an exorcism. As unsettling events unfold, his "lucky break" takes a dark turn. The director (Adam Goldberg), aiming for authenticity, subjects the struggling actor to humiliating treatment, forcing him to confront past traumas and accelerating his decline. Witnessing his suffering, Anthony’s estranged daughter (Ryan Simpkins) turns to the film's priest advisor (David Hyde Pierce) for help. Has the pressure of making the film sent Anthony back to his old addictions, or has it opened a portal to something more sinister?