Alberto is born in wartime, where his father dies a hero. He grows up effeminate. His mother sends him to military college where Fernando bullies him, but they become friends. When war comes, he has to face his fears.
When the U.S. invasion and the landing of troops in 1847 begins, the former cadet Miguel de la Peña (Jorge Negrete) and his friend Agustin Melgar (Jose Macip) decide to return to the military college and fight heroically in the defense of the Mexican army.
