In a Spanish town that has been dying of thirst for years, some Americans who claim to be experts in oil prospecting say that there is oil. Considering the evidence of the treasure that encloses his subsoil, the owner will asks the shelter of one of the rich man of the town so that he decides.
In 1922, Infantry Captain Fernando Salas, arriving from Madrid, joins, without much enthusiasm, a battalion ruled by Commander Almendro, a tough veteran of the African war who soon notices a clear lack of military vocation in the new recruit.
