In the city, one after another, under the same circumstances, people are shot. The victims were very slippery personalities - a gigolo, bandits, an alcoholic... All the men were shot in the groin, and there was a rubber snake next to each corpse. It looks a lot like revenge, but the motive is unclear. Detectives Nika and Valdis are chronically unlucky - as soon as a trail appears, it ends immediately. The matter is complicated by the fact that crime bosses have captured their fellow investigator, promising to release him in exchange for the killer. This has never happened before - the mafia dictates terms to the prosecutor's office...