The final part of trilogy about the life of a young factory worker, Maxim. Following the Russian Revolution, Maksim is appointed state commissar in charge of the national bank. With great efforts, he learns the complexies of the banking trade and begins to fight off sabotaging underlings. Dymba, now a violent enemy of the Republic, tries to rob a wine store but is arrested with Maksim's help. Maksim also exposes a conspiracy of a group of tsarist officers who prepare an attempt against Lenin. He then joins the Red Army in its fight against the German occupation.

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