In different cities of Europe, famous psychologists are being killed one after another. Tony Hill, a unique expert on the behavior of serial killers, is asked to take part in the investigation. He decides to get down to business only after learning that his good friend has become the next victim of the maniac. Hill's assistant, Carol Jordan, is conducting deadly work in Berlin to expose a human trafficking group. Trying to solve the mystery of an international crime, Tony and Carol find themselves in a world of violence and corruption, where they have no one to rely on but each other.