Independently wealthy Paul Knox works for a global private espionage corporation because he craves the excitement of the job. On a previous mission, Knox fell in love with the beautiful Natalie Tinsley, daughter of a master smuggler and criminal. Now, with the elder Tinsley dead, a Russian interloper has assumed Natalie Tinsley's identity, and is head of a giant gold smuggling ring that is being financed by the Soviets to establish a puppet government in Cuba. The real Natalie Tinsley has caught wind of the project and wants a piece of the action. She meets up with Knox who's been assigned to the case to destroy the smuggling ring. In the remote Mexican village of La Cruz, Knox and Tinsley, with the help of a cast of colorful characters including an etymologist and a stripper, are determined to uncover the Communist plot and the twenty million dollars in Cuban-rebel gold that went with it.