Kidnappings and murders, blackmail and mysterious disappearances, suicides and industrial espionage - private detective Tatyana Volkova investigates the most diverse and complicated cases. Tatiana is a former employee of the city prosecutor's office, but extreme circumstances forced her to leave her favorite job and start doing private investigations. Tatiana's opponent is often strong and dangerous, but the famous detective of the provincial city of Tarasov manages to cope with an investigation of any complexity.