The film refers to the "gray neighborhoods", called in Argentina "villas miseria", in which the less qualified workers or those who have recently arrived from the rural areas live in the industrial cordons.
Pepe receives a notebook from his great-uncle containing the formula for making an atomic bomb. When some specialists dedicated to science discover it, they begin to send people to steal it.
Soledad is a young Spanish singer of the last century that everyone wants to conquer. But she only has eyes for one man, Pepe Velazquez, owner of the cafe where she sings. After several incidents caused by all kinds of jealousy and misunderstanding, Pepe embarks for America, leaving Soledad by...
