Felipe Lopez hates all "gringos" even though his wife Alice is an American. One day, he takes his young daughter, Maria, and crosses the Mexican border, leaving Alice and their adopted son, Danny O'Neil, behind. Years later Maria is now a rebel fighting with her father against the Mexican government while Danny has become a member of the Texas Rangers. While fleeing across the river from her father's enemies, Maria meets Danny and, failing to recognize her adopted brother, invites him to a dance at her father's hacienda. Danny braves many dangers to attend the ball, where he is captured but escapes with Maria's help. Later, believing that Danny is to blame for the capture of her father, Maria leads an attack on the American town in which the Mexicans are beaten and Maria is made captive. Felipe recognizes Alice, and on his deathbed informs Maria that Danny's foster mother is in fact her own mother. Realizing the folly of her ways and her love for Danny, Maria returns to Mexico to teach the schoolchildren to love their American neighbors. Her penitence thus accomplished, Maria accepts Danny's love.