Father Frost decides to send Yaga to be re-educated by Petya, a boy who has his own problems - he wants to reconcile his parents before the New Year. Petya's parents spend more time working than they do with their family, and Petya wants to fix this situation before the New Year.

Based on the short story by Yu. Shcherbak, ‘Harmonic Inspiration.’ The film’s characters meet at a concert in the Kyiv Philharmonic. That December evening, filled with Vivaldi’s astonishing music, becomes a part of each of the four people’s lives, helping them recall and understand their past.