When the herdsman's son was born, the Great Ruler of the underworld, Erlik Khan, predicted to the newborn that he, having reached the age of seventeen, would be sacrificed to atone for human pride. But Mohammed — that's what his father called him — grew up kind and brave. The young man managed to force the Lord of Darkness to change his destiny.
The film is a recollection of an adult about the unforgettable days of the first post-war year. Klava, who lost her husband at the front, with her 12-year-old daughter Lyusya sheltered Aygul with a seven-year-old boy in her house. Aygul's son - the main character, now became a pilot, recalls his childhood in a small Kazakh city, which fell on a difficult post-war time. Flying high above the Earth, he thinks of the Russian girl Lyusya, from his distant past.