Father Gabriele Amorth, the Chief Exorcist of the Vatican, embarks on a chilling investigation into the possession of a young boy. As he delves deeper into the case, he unravels a web of secrets that spans centuries, revealing a dark conspiracy that the Vatican has fought to conceal. What begins as a routine exorcism soon spirals into a harrowing journey, challenging Amorth’s faith and putting him at odds with powerful forces determined to protect their hidden truths. Each revelation brings him closer to the heart of an ancient evil, forcing him to confront not only the supernatural but also the moral complexities of his own beliefs. As he battles to save the boy, he realizes that the stakes are much higher than he ever imagined, leading him to a confrontation that could shake the very foundations of the Church.