Private detective Sergei Krasnov receives an unusual order. A rich beauty invites him to conduct surveillance... on herself and film her adventures. He becomes an involuntary witness to the client's love games and finally ends up in her bed. And the next morning he is arrested by detectives from the Moscow Criminal Investigation Department on charges of murdering the beauty’s husband, the largest Russian oligarch Herman Frein. Irrefutable evidence points against him. Sergei guesses who set him up, but this does not make it any easier for him: he is in a strong trap. The rescue of drowning people is the work of the drowning people themselves. Sergey remembers this commandment...