post-war years. Yakut hunter Bykadyrov discovers mysterious footprints in the taiga leading to the village where the murder of the head of the geological expedition has just been committed. A group of state security officers arrive from Moscow to investigate the crime.Afraid of being exposed, the saboteurs leave the village and run to the agreed place. The task force manages to detain the killers and the crew of the plane that flew in after them.