A mysterious murder of a prosperous and famous St. Petersburg dentist attracts public attention. The dentist’s widow Natalia behaves in a peculiar fashion. This beautiful woman has everything—money, lovers, and freedom. Perhaps what she lacks is a bit of excitement? A stranger suddenly appears in her life. On the surface, he doesn’t seem to need anything from Natalia but a confession. Little by little, Natalia comes to realize that nothing that has been happening to her is a coincidence. Was the death of her husband a coincidence?