Klava, who lost her husband at the front, with her 12-year-old daughter Lyusya, sheltered Aigul with a seven-year-old boy in her house. Son Aigul - the main character who has now become an astronaut - recalls his childhood in a small Kazakh town, which fell on a difficult post-war period. Flying high above the Earth, he thinks about the Russian girl Luce from his distant past.