 At a border town, Eddie Dean, the character (played by Eddie Dean, the actor, and not once addressed as "Himself" by anyone in this film) and his partner, Soapy Jones (Roscoe Ates), attend a fiesta at the home of Don Lopez (Harry J. Vejar) who, in accordance with his custom, displays a valuable diamond necklace to his guests and has one of them, Maria (Dolores Castle), wear it. Jim Barrett (Gregg Barton), another guest, offers to buy the necklace but Don Lopez declines to sell. Barrett, with his henchmen Cory (Jimmy Martin) and Avery (Zon Murray), plan to steal the necklace and the rest of the Lopez diamonds. Maria, to Eddie s surprise, appears to be working with the outlaws. But, as Eddie s investigation proceeds, it develops that Barrett s gang has also robbed Don Lopez of his gold, and that Maria is a representative of the Mexican government, sent to protect the gems.