A portrait of the era of "Red Terror" during the civil war that followed the Bolshevik revolution, The Seventh Companion offers a character study in General Adamov (Andrei Popov), a law professor in the tsarist army, who is incarcerated by the Bolshevik secret police along with many other members of the bourgeoisie. Finally released into the new world of the Soviet Union, the resigned officer finds that he has lost everything from his old life except a mantel clock that he carries through the night from place to place, until he ends up back where he started.

Military doctor General Klenski is arrested in Stalin's Russia in 1953 during an anti-Semitic political campaign accused of being a participant in so-called "doctors' plot".