Au cours du violent conflit qui opposa les États-Unis au Mexique, une sanglante méprise fit un héros du capitaine John Boyd, homme pusillanime et lâche. Son supérieur hiérarchique n'est pas dupe et l'envoie aux confins enneigés et sauvages du pays, dans une compagnie constituée de singuliers personnages: le commandant Hart, le docteur Knox, Cleaves, le cuistot et Georges, un éclaireur indien. John Boyd est entraîné dans une enquête par l'étrange Colqhoun, qui déclare que ses compagnons de voyage ont été victimes d'un militaire cannibale rendu fou par le froid et la faim.

The story of Ulzana, an Apache chief who has reached a rapprochement with the local Mexican population and generously extends it to whites who travel through the territory. His people have become inured to the treacherous ways of the white man, however, and are now reliant on them for booze, 'relief flour' and beef steak.

A villainous cavalry officer is trying to force the owner of a hacienda to give him his land when a courageous settler comes to the rescue.

One of the most controversial conflicts in U.S. history, the Mexican-American War erupted as President James K. Polk sought to extend the borders of the nation to the Pacific, taking by force whatever territory stood in the way. This special, produced by The History Channel and hosted by Oscar de la Hoya, looks at the war from the perspective of both countries, and chronicles the fighting from its inception to its conclusion with the Treaty of Guadalupe Hidalgo.