El Polaquito

Polaquito is a street kid who earns a living by singing tangos in the train carriages at the Estación Constitución train station in Buenos Aires. There, he meets and falls in love with Pelu, a girl who works as a prostitute at the same station. Every day, both of them must hand their earnings over to "Rengo", a gangster who takes advantage of children, and who does not take a liking to the amorous pursuits of his workers.