Molly Egan, an almshouse resident, takes part in picketing a laboratory developing nuclear weapons. Judge Henry Pulaski finds her guilty of “trespassing.” Not heeding his warning, Molly again participates in the picket, for which she goes to prison.
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.
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.
