Although Azul is a mean, low-down, varmint like Ortega's three other sons, there is a slight glimmer of goodness in his soul since he is adopted. He proves it when he kills one of his brothers who was attempting to rape beautiful Texan maid Joanne. Renouncing his adopted family and claiming a new moniker by the name of Blue, he helps Joanne and her father on their farm, and soon Blue and Joanne are in love.