Landscape designer Varvara Krasnova arrives at a private estate at the invitation of the hostess to beautify the garden. And he unwittingly becomes an eyewitness to the tragedy — in the morning after a family party, the owner of the house, Boris Krasnov, is found dead in the office. It would seem that who could suspect a landscape designer who accidentally got into a house of murder? However, investigator Kirill Malinin finds out that Varvara Krasnova is not at all who she pretends to be.