David Gray is a former retired police officer. His quiet measured life is disturbed by strange aliens. Spirits of dead children begin to visit an elderly man. The guys want Gray to find their killer. Many years ago, a detective conducted an investigation into the murder of children, but the perpetrator was never found. Using the old connections, David begins to look at materials of similar cases in order to find even the slightest clue. His emotional equilibrium does not contribute to the constant conflicts with an adult daughter, who is mired in parties and alcohol. Now, a man has to solve not only family problems, but also to find a maniac who freely walks among people.