The film is set in 1919. The film tells about an episode of the Civil War, when the troops under the command of M. V. Frunze took Ufa away from the White Guards.

The post-war years. Yakut hunter Bykadyrov discovers mysterious footprints in the taiga leading to a village where the head of a geological expedition has just been murdered. A group of state security officers arrives from Moscow to investigate the crime.