A case brings together Donetsk Polytechnic Institute student Ivan Krasko, owner of a beautiful strong voice, with former singer Korobeichenko. Contrary to the will of his father, a hereditary miner, the hero refuses graduate school in Moscow and, under the guidance of a new friend, begins to seriously prepare for his first solo performance.

In the school forestry, they discover a lair where a she-wolf lives with three cubs. Sheep go missing on a collective farm and the wolf family is blamed for this. But the young foresters are sure that the "wolf" stealing sheep is one of the collective farmers.

A children's adventure film about pioneers of the 1970s, red scouts who discovered a partisan squad's diary and a pioneer flag, which was saved during a battle by a young hero.