Film is a sequel to "Front bez flangov" (1974). About the partisans fighting against the Nazi's occupation of Rissia during the WWII.

Front za liniey fronta (1977) is the second episode, after "Front bez flangov" (1974) in the trilogy about the partisans fighting against the Nazis during the WWII on the territory of Russia. Film is set in the winter of 1943-1944. Major Mlynsky is the commander of the partisan group, that is fighting behind the Nazi's front-lines. Major Mlynsky is invited to the Chief of Staff, where he is promoted to Lt.-Colonel for his courage. Now Mlynsky is in charge of the new partisan's operation.—Steve Shelokhonov