1788 There is a Russian-Turkish war. During the siege of Ochakov, infantry officer Andrei Solomin was wounded. Having received a strong blow to the head, he loses his sight. Faithful uncle Yeremey takes him to St. Petersburg to the young doctor Grave. Andrey stays with his friend Grigory Bekleshov. He is preparing for his sister's wedding. Masha is married to the young Count Venetsky. But on the eve of the wedding, Masha's letters come to the Venetskys' house, from which it can be seen that she has an illegitimate child. The wedding gets upset, and Masha is driven out of the house by her tyrant father. Venetsky, who loves Masha, but is unable to resist his relatives, is looking for her and comes to Gregory. He furiously challenges him to a duel. He calls Andrei, who happened to be nearby, a second. Bekleshov dies, and Venetsky runs away. Now Andrei's duty is to avenge his friend and Masha. But to whom? And what can a blind officer do without a lot of money and connections?..