The story of Maria Alvarez and Sara Sandoval. Maria is a poor farm-girl whose father is being forced off his land by a cruel US land baron, Tyler Jackson. Sara is the wealthy daughter of the owner of the nearby properties, and has recently returned from Europe where she attended school. In one fell swoop, both Maria's and Sara's fathers fall under attack by the baron, (Sara's father is killed, María's is shot but survives) giving him free rein in the nearby territories.
As an act of revenge, Maria and Sara become bank robbers, stealing and giving back to the poor Mexicans who had lost their lands.