Under the guise of "student construction team of graduate students" a brigade of "covenants" arrives to the collective farm, expecting to get one thousand rubles for the construction of the "fountainarium" that is not envisaged by the estimate. However, under the gun of a local photo correspondent and the close attention of the collective farmers, Ruslan Ruslanych, a student of evening school, drunkard Tyulkin, illuminator in the theater Savchuk and hiding from alimony Panin, in order not to give himself away, are forced to work diligently and to be rehabilitated.

The young officer Sergei Lukonin faced severe trials: the war in Spain, an injury, escape from captivity, and the battles at Khalkhin Gol. Yet, he overcomes all hardships, showing courage and conviction in the justice of the cause he is fighting for.