After losing his father, Roma stopped believing in goodness and became cocky and disobedient. Together with a timid junior high school student, Vitya, they make their way to the house of a mysterious old man, where they find magical books with animated characters. Inadvertently, the boys release an evil sorcerer. To save his friend and put everything back in its place, Roma must do the impossible: believe in himself again.

1960. In a town near the Baikonur cosmodrome, where every rocket launch lights up the sky with dreams, lives ten-year-old Misha, a boy with a bright head full of space fantasies. On his birthday, Misha finds a dog, Belka, who will not only determine his fate, but also write a new page in the history of space exploration.