A Chinese-American woman tries to expose an illegal alien smuggling ring.

Halstead forces the Land Agent to alter the records and then kicks the Mexicans off their land. Buck has been sent to investigate and quickly joins up with Juan Cantova in the fight against Halstead. To keep Buck from seeing the records, Halstead has the Agent murdered. His men then claim Juan killed him and both Buck and Juan then find themselves wanted dead or alive.

Cheyenne joins El Diablo's gang looking for his long time missing wife and daughter. After saving Romero from the gang he returns to get Connie who he now realizes is his daughter. Captured, he escapes with Connie and they return to Romero's just ahead of El diablo's attacking gang.

Manuel and Carga are after the hidden map of a gold mine which is somewhere in the hacienda willed to Manuel's brother, Don Careta. Following the third midnight raid on his home, Don Careta is fearful for the safety of his daughter Wanda, and sends for Jack Martin to help him.

A ship disappears without trace. What happened to the crew? Years later there's news of possible survivors and soon a rescue team is setting sail. Eventually they discover a young man living on a remote island and they ask him to leave with them. He refuses, so they abduct him. But he gets his revenge and guides them into the lair of the devil of the deep. Alternate language version of THE SEA FIEND (1935)