Anna loves and is loved. Who would have thought that it was love that would bring her so many misfortunes? While vacationing with her husband Mikhail Kornilov in an Orthodox monastery, she meets a successful businessman and philanthropist Pereykin. Returning to St. Petersburg, the couple find themselves in a whirlpool of events - businessman Pereykin is hacked to death with a samurai sword, as if in a duel , and Mikhail is assigned to investigate his mysterious death. The widow of the murdered man unexpectedly turns to Anna for help: they are watching her, threatening her, promising to deal with her little son if she does not share her inheritance. Anna decides to hide it. She doesn’t even suspect that she has become an accomplice in the devil’s game: good intentions have never brought anyone to good. But the main test lies ahead - will Anya be able to save her beloved husband... from himself?