A former US Operative, who lived in Russia in his earlier years and had been married there with a child, comes out of retirement to face down a former enemy, now running as a candidate for President in modern Russia. Working with a Russian policewoman, they work to uncover a plot to use biological weapons against certain factions of the Russian people to commit genocide. The virus would also be released in other populations, but would be treated making the candidate a hero. A side plot has the agent being reunited with his long lost daughter.

Two novels united by common characters and a never-settled problem: the clash between sincerity of children and the heartless pragmatism and ambitions of grown-ups.

The film is based on a true dramatic story of the fate of a wonderful Russian woman - Countess Yulia Petrovna Vrevskaya, one of the first Petersburg beauties. The events of the movie take place during the Russian-Turkish war for the liberation of the Bulgarian people from the Turkish yoke. An early widowed baroness, having left Petersburg, and having invested all her money in organizing a volunteer sanitary detachment, she becomes a sister of mercy on the front of the Bulgarian war with the Ottoman Empire of 1878.

Among his friends, Sasho is famous for "killing a wolf". Milka, a good-hearted girl falls in love with the heroic boy. They get married and have a baby girl. In order for Sasho to continue his architecture studies, Milka starts to work in a factory. Sasho gives up his studies and he gets involved with a gang of swindlers.