Santo is called in to stop robot terrorists from sabotaging oil supplies in Puerto Rico.

A mad scientist invents a formula to control Puerto Rico. A little pig named Chona drinks water from a pond contaminated with the formula and grows to gigantic proportions, chasing and killing people.

Police agent Camelia is assigned the investigation of a drug smuggling ring. Pro wrestlers-crimefighters El Soberano and the "Hermanos Rojo" (El Valentino and Félix Ramírez) will be working with her. Meanwhile, the sinister Dr. Gandía assembles his gang of evil wrestlers -- including El Asesino, El Araña, El Yancy, and La Bruja Maldita -- to warn them about the imminent arrival of Soberano and the Hermanos Rojo. The heroic grapplers must not be allowed to meddle in Gandía's business.