A dark force looms over Merrill Hall after the events with Charles, and the only one who can stop him is The Mexorcist

Shortly after the events of "The Mexorcist," Federico is murdered and The Mexorcist is left without a partner. Two years later, another demonic presence appears in Merrill Hall and the men must enlist The Mexorcist for one more job. When he begins to understand that the possessions all have one thing in common... The Puppeteer.