During the Spanish civil war a Franco army patrol receives the order to eliminate some enemy machine guns and to seize a bridge that is important for troops deployment. Novales, a young liutenent, joins the patrol. He is the son of a local landlord, killed by a famer revolt. Pushed by revenge Novales wants to punish the killer of his fater. Even if the bridge, by the end of a bloodthirsty fight is conquered by the Franco patrol he is downgraded for his selfish behaviour.