Upon hearing that his Mexican lover, Rosa (Annabella Incontrera), is both pregnant with his child and deathly sick from cholera, Confederate soldier John Warner (George Hilton) deserts the army alongside his friends, Sam (Antonio Pica) and Lucky (Alberto De Mendozo). Facing down Rosa's father, Don Pedro Sandoval (Ernest Borgnine), who had refused to let his daughter marry a white man, Warner and his fellow fugitives swear vengeance on her family after learning of Rosa's death.