[1] Mr. Tomasz (this is his given name, "Thomas" in English) is a middle-aged gentleman who lives adjacent to Warsaw's Old Town.
His apartment holds an impressive collection of art and furniture; he is very rich but has no women friends.
[2] One day, as Tomasz is busy working, he ignores his daily routines, even forgetting to instruct the new porter not to let organ grinders into the courtyard.
But when he gets up in order to chase the organ grinder away, he sees the little girl in the opposite window enjoying the music's metallic tones.
In the final scene, he sets out to the eye doctor with a new life goal: to help the little girl and her mother.