A third part of the adventures of Krosh and his friends.

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.

Two young, simple-minded twin sisters sewing-motorists from a vocational school, who after the death of their mother live separately from their alcoholic father, are charmed by a modernist painter who is indulgent to them and even introduces them into the circle of his "chosen ones". Serge uses the sisters as models and introduces them to his photographer friends.

The continuation of and adventures of Krosh and his friends.