Lawyer Lisa Travina and her assistant Glafira, acting on behalf of client Lydia Vdovina-Osborne, who flew in from the States, are looking for her old friend Elvira Andreevna Norkina. Five years ago, Elya lost her husband, became isolated in her loneliness, and then, after selling her apartment on Ostozhenka, she seemed to disappear. Having started an investigation, the lawyers learn that Elvira Andreevna died, and at the same time, Elvira Andreevna continued to live. They suggest that all this time, according to Norkina’s documents, a completely different woman lived. Arriving at Elvira Andreevna’s new address, they learn that she was killed yesterday. The housekeeper Natasha, who informed them about this, cannot believe that her mistress, her friend, her Elechka... is not Elechka! After all, she has known her for almost five years, knows everything about her! All? Where is the real Norkina? Lisa and Glasha realize that they are involved in a criminal story...