Returning cross-country from a wrestling match with his manager (Carlos Suárez), Santo is passing through an isolated area when his radio cuts out. Thinking nothing of this, he proceeds into the city. In the meantime, a mysterious masked figure, Magnus (Carlos Agostí), interrupts all television broadcasts to announce the on-air kidnapping of an actress. As his men make off with their victim, Magnus warns of a jewelry store theft which he will broadcast the following week. Santo is brought into the case, as is reporter/singer Gerardo Reyes, who had been performing on TV at the time of Magnus' initial broadcast. Working loosely with Reyes, Santo moves to investigate Magnus and block a planned second kidnapping. Also stars Rubi Re. (In Spanish language).