Little Sasha grows up in an orphanage and waits for his mother to come for him. One day he hears a work by S. Rachmaninoff on the radio, falls in love with the music and learns to play the piano all by himself. In an orphanage, and afterwards in a real life, our hero will face cruelty, unrequited love, crime, yet still find the way to his vocation – music. But how do you stop waiting for your mother?