1867, Europe on the eve of great upheaval. The mysterious Countess Vera Wilde lives in the German city of Baden-Baden, famous for its casino and healing waters. Such famous Russian writers as Goncharov, Dostoevsky, Zhemchuzhnikov come here to relax or play, and their colleague Turgenev even built a house for himself in Baden. But it is not they who are now interested in Countess Wilde, but the aspiring writer Mikhail Avilov, who unexpectedly became a witness to the crime. Although the police soon arrested the criminal, Vera and Mikhail realized that the investigation was far from over...