When a doppelgänger copies a person, the original dies. Exactly this happened to Moscow high-school student Zhenya. After Zhenya’s death, his girlfriend Vera devoted her life to working in Directorate D—a law-enforcement organization that protects people from doppelgängers. Fifteen years later, her investigation into the death of another D-victim—an unknown man found in a park—changes her life forever.