Olga Boykova, editor-in-chief of the newspaper “Witness”, gives a vacation to her secretary and friend Marina, who once again fell in love. At the same time, there are several daring robberies of exchange offices and jewelry stores in the city. The police can't track down the criminals.... Suddenly, the courier of the newspaper reports that his friend, former criminal Konstantin, decided to quit with crime and is afraid that these robberies will be “hanged” on him. But the guy is suddenly killed by . However, Olga continues to investigate . And what is her surprise when it turns out that the gullible Marina is also involved in this case, albeit not by evil intent, but by naivety ..