In October 1917, Warrant Officer Shakhov sided with the revolution.Shakhov is disturbed by the thought that once, during the imperialist war, he was arrested for participating in a revolutionary circle and, during interrogation, while in a semi-conscious state, revealed the name of his comrade and teacher, the revolutionary Rayevsky. This offense of Shakhov's was exposed. The Revolutionary Tribunal sentences Shakhov to death. At the last moment, he is saved by Raevsky, who by then had become a significant party figure named Turbin, who tells the court about Shakhov and the circumstances in which he unknowingly became a traitor. The tribunal acquits Shakhov. Based on the novel “Nine Tenths of Fate“ by Veniamin Kaverin.