The film is dedicated to tankmen - the Mikheev brothers, members of one tank crew. Collective farmer ID Mikheev writes a letter to the People's Commissariat of Defense with a request to enroll his fifth son in the tank crew in which his elder sons serve. ID Mikheev escorts his son P. Mikheev to the place of service. Tankmen - brothers Mikheevs in practical, theoretical studies, military exercises. Far Eastern Army maneuvers. Tank crew of the Mikheevs on maneuvers. Landscapes of the Far East.