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The 1920s. Count Kabardin, who emigrated to France, sends Colonel Lavrov to Russia with the aim of bringing his daughter Irina to Paris. Irina married Chekist Andrei Slavinsky and joined the revolution. Under the guise of a White Guard lieutenant, Andrei is sent to France. He carries out a secret intelligence mission. But Irina believes that her husband has died. The chairman of the Cheka, learning of Lavrov's visit, gives him the opportunity to take Irina to France and gives her a new assignment and a password for Andrei.