During the so-called Conquest of the Desert, Major Sarabia is sent to the Cruz del Sur fort to replace Major Molina, who was murdered at the hands of the Indians. He is the only one who can stop Santiago, "the most rebellious of the caciques of the southern border, the only one who does not accept peace with the government."

• San Blas Film
• Elsa O'Connor
• Froilán Varela
• César Fiaschi
• Inés Edmonson
• Elisardo Santalla
• Amelia Senisterra
• Juan Pérez Bilbao
• Fernando Lamas