The script is based on a children's story by the Bashkir poet and writer Mustai Karim "The Joy of our Home", written in 1951 on behalf of a 6-year-old village boy Yamil. In the autumn of 1944, a Soviet soldier finds a girl hiding in a stove in a village ravaged by the Nazis. He manages to send her to his native Bashkir village — to his wife and son Yamil. So the boy gets a charming little sister Oksana — with hair soft as silk and white as flax. Yamil gets all his toys for her, but the scared girl hides under the bed — she sees terrible fascists everywhere. In order for his sister to finally come to her senses, Yamil will have to take her under his care and perform many feats for her.