Homophobic detective Mark Rima is forced to team up with the openly gay and flamboyant Detective Chris Riant to prevent a serial killer disguised as a nun from targeting the five members of a band known as “The Ex Choir Boys.” When it becomes clear that the detectives need additional help, F.B.I. profiler Agent Peccant (played by comedian Ant) is brought in to assist. As the investigation unfolds, the police begin to suspect that the “nun” might actually be a silent observer to the brutal murders. The focus of the task force then shifts to the Catholic Church and a suspicious group of priests known for their tendency to “cleanse the souls” of innocent young choir boys.