A family of five, including four sons, relocate from Lucania to Milano, where the eldest son already resides. Initially, they face numerous challenges, but each member finds a way to make a living. The brothers pursue different paths: one boxes, another works in a dry cleaner's, and a third focuses on his studies. Romantic entanglements arise when one brother falls for a prostitute, leading to a complicated web of relationships. As tensions escalate, a bitter feud brews between the brothers, threatening to culminate in tragedy.