Private detective Tatyana Ivanova is hired by Eleonora Brutskaia, who wants to find out where the large sums of money came from for her infantile son Pavel. Following the target, the investigator learns: Pavel works in a nightclub and provides certain services to wealthy elderly ladies. That’s it—simple and straightforward! Ivanova is preparing to close the case, but Pavel is murdered. And it all happens in front of Tatyana: she sees a yellow Jaguar driving away from the crime scene. It turns out the car belongs to the daughter of a local businessman—Nastya Kolesnikova. But then the trail goes cold: the girl has been kidnapped recently, and now they demand a ransom for her…