The attractive and rapturous Eva is ready to do anything to be the protagonist of a cruel and painful romance. Determined, the young woman falls in love with the humble craftsman Bruno, whom she later abandons to marry the millionaire Ernesto. Bruno goes mad with pain and is admitted to a madhouse. In delirium, Bruno imagines a tigress with Eva's face attacking her in her delusions.

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.