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.....