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. 1982. The chief engineer was found hanged in the utility room of a bakery in one of the Siberian cities. The first version is suicide. However, the young opera Andrei Laptev, who is entrusted with this case, thinks differently. The deceased had no serious reasons to take his own life. In addition, there are traces of other people at the crime scene. What if an engineer was helped to die? Laptev begins to carefully study the circumstances of the incident and unexpectedly finds out terrible details, which, according to Soviet laws, have no statute of limitations... A unique opportunity to temporarily return to the recent past and, in a sense of complete reality, live with the heroes the most desperate period of their lives.