Pavel Klyonov

In the border zone of the Soviet-Polish state border, gangs of the Organization of Ukrainian Nationalists operated. Captain Olkhovik was given the task of infiltrating the OUN gang.

During the construction of an oil pipeline, an unexploded bottom mine was discovered. The dangerous situation brings back memories of wartime events for diver Gnat.

Cowboys try to catch a mustang known for its speed and intelligence, but all attempts fail.