In front of private detective Tatyana Ivanova, at the entrance to a casino, her friend, police captain Andrey Melnikov, is shot by a gunman from an automatic weapon queue. Is this a coincidence or revenge? Or maybe the gangsters are trying to cover their tracks—after all, not long ago a commercial director of a very suspicious firm was killed in a car explosion, and the police had taken an interest in the company’s activities. Tatyana immediately joins the investigation and, along with her friends from the operations team, tracks the criminals relentlessly. Along this thorny path, even new bombings and assassination attempts can’t stop her…