Luis is a young investigator working on his first case: inquiring into the death of a prostitute. The suspect is Father Fernando, but he is cleared from charges when the prostitute's body is once again found, hung and dressed as a nun. Shortly thereafter the clergyman is found dead, while the prostitute reappears and is considered the only person under investigation. The case gets more and more complicated and Luis asks for advice from his wise mentor, a former advisor of the homicide investigation unit. Once the inquiry seems to be over, all the characters find themselves in court, where a strange judge pronounces the final ruling.