Forced to abandon their land that was sold to the United States, a group of Mexicans turns into bandits. Their leader, Rojas, with the help of Trevor organizes a big robbery. But, caught by the sheriff, he is condemned to 20 years of prison. Threatening to torture Rojas' son, Trevor learns where the money is hidden, not realizing that Rojas' revenge would be so ruthless...

A crime film released in 1967

An electronic ray that can counter any aerial attacks has just been invented by Professor Goodwin, but before he can put in good hands, he is kidnapped by a criminal organization, that starts an international bid for him and his invention among the rogue countries of the world. The CIA sends Agent Sigma 3 to find the Professor before the transaction takes place. His mission takes him from Rome to Tangiers, and to Barcelona.

The improvised spy, Jaime Bonet, must go to Barcelona to recover a stolen microfilm which is hidden in a soccer ball.

A sheriff fights against a band of thugs led by a rich banker.

A band of fierce rustlers is ravaging the region of Las Cruces. Appears an outsider who saves the ranch owner "The Spur" of being kidnapped by members of the band. Thankfully, he was appointed foreman, and his daughter is in love with him. But things are not what they seem and there are murky intrigues in the background.