Nostalgia for times that have already become history. The author describes the atmosphere of the era and the internal state of the characters so realistically that you believe him immediately and unconditionally. 1983. A student from the Congo was found dead in the classroom of one of the Siberian technical schools. In order to avoid an international scandal, the investigation hastens to make an official conclusion: death from a heart attack. At the same time, the management of the Internal Affairs Directorate secretly instructs Lieutenant Andrei Laptev to understand what happened. The detective finds out that the African's death was caused by electric shock. But the strangest thing is that a voodoo doll with a “heart” pierced with a needle was found at the crime scene. What is this - a secret ritual of angry tribesmen or someone's skillful practical joke? Laptev immerses himself in the student atmosphere and learns the terrifying details of a brutal crime... A unique opportunity to temporarily return to the recent past and, in a sense of complete reality, live together with the heroes the most desperate period of their lives.