Lieutenant Mario Ludovici, an army officer, gets himself transferred to a Libyan post when his romance with society girl Cristiana goes on the rocks. Ludovici is looked upon as a weakling by Captain Santelia, the hard-boiled commander of the troops, but after a bitter campaign against a rebel tribe Ludovici proves his true worth and returns as commander when Santelia is mortally wounded. Cristiana arrives and tries to entice him to return to Rome, but he decides to stay in Africa with the army.