The young beauty Mashenka Rezvanova is the only one who does not want to come to terms with the fact that a brilliant naval officer, heir to the Gagarin princes, whose pupil she is, is unjustly sentenced to hard labor and eternal settlement in Siberia. Masha, overcoming one obstacle after another, rushes to a distant and unknown land to enter into a fictitious marriage with Dmitry Gagarinov, and later arrange his escape. Young lovers will have to endure many hardships in the wild Trans-Baikal taiga, but will they gain freedom and will their hopes for happiness and love be fulfilled?