One evening in a restaurant, there is an attempted murder of businessman Sandalov. The shooter—his own security guard—is arrested red-handed, with a pistol in his hand. Everything seems clear, but… Who ordered the failed killing? And will other attempts follow? Meanwhile, the mother of the “criminal” is convinced that her son was framed—that he can’t commit murder. That’s how private detective Tatyana Ivanova gets not one, but two assignments—and soon a third one is added: find the person who stole a huge sum of money from Sandalov’s safe. Unraveling the knot of intrigues is even more difficult because she has to play the role of a foolish rich widow who wants to become a tough businesswoman…