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.
Schoolboy Vasya and his little sister Klasha live on the shore of a picturesque lake, in which trout are bred. With the help of their friends, the dogs of the Quiver and the horse Strelka, the guys detain the poachers.
