Una joven profesora idealista toma un puesto en una pequeña ciudad apartada y dedica su vida a educar a los niños del pueblo.

The building of a railroad under tough conditions from searing heat to freezing cold in the Sonora desert provokes clashes of passion and struggles between the engineers and the workers at the campsite. The workers also contend with sudden dust storms that are called the 'black wind'. Based on true events.