The Key (1961)

The official Nikolay Zakharov and his wife Lyalya have a son. When they bring the child home, three fairies unexpectedly come to them, Tyulpina, Giatsinta and Liliana, who bring the child a gift in the form of a "ball of happiness". According to them, when the boy grows up, he will have to go out into the open field, and, having pronounced the spell "Fly, ball, like a dove, but only straight, and not sideways", go towards his happiness.