In the city, people disappear and die under mysterious circumstances. Commissioner Gard and Inspector Taratura believe that all these murders are the result of a war between two mafias. But journalist Chester has a different opinion. He is sure that the crimes are the result of the activities of "Adventure Firm" company. The company sells adventures to everyone who wants to tickle their nerves. The most expensive and interesting adventure is the “adventure without guarantee,” but in this case the company is not responsible for the possible death of the client. Wanting to understand the company's activities and write a report about it, journalist Chester buys himself the deadliest adventure....

Based on real events in 1974 in Riga: the robbery of collectors and the murder of the driver. The personnel of the Gorky, Odessa regional executive committees and the Internal Affairs Directorate of the Latvian SSR took part in the film.

An adventurous action-packed story about a police officer nicknamed "Sheriff", who, bravely fighting mafia functionaries, easily and simply takes bribes from its bosses.