In a fictitious South American country there's lots of political tension, the labor-unions have all their members on strike. The public demands the return of politician B. from exile. However private trucker Pal can't afford to strike, so he's beaten up and his truck burned. In the headlines he's described as strike-breaker. This is only part of an intrigue which shall get him to murder B.

After the civil war, Rosa, a beautiful and hard worker woman falls in love with a sharpener who turns out to be a con man. When she becomes a widow, she emigrates to Madrid with her daughter beginning to work as a nurse in the home of Don Pedro, an influential food manager.