A real master of hara-kiri has appeared in the city. Even samurai never dreamed of such things! Only this maniac cuts the belly not of himself, but of his victims. Moreover, he kills only cops and bandits in such a sophisticated way. Opera Kalinin simply broke his head - what did both of them do to annoy the maniac? It is impossible to catch him at the crime scene - there are no traces, no witnesses. Although the opera suspects former prisoner Alexei Khokhlov, from whose hands the brothers also die, he quickly understands that this is a different story. Alexey is simply settling old scores with them. But the maniac is still elusive...