A former wrestler called "the bat" lives in hiding after being disfigured and plans to kidnap a beautiful female singer and a lucha libre star known as Blue Demon.
In the Age of the Inquisitions, 1603, Santo, El Enmascarado de Plata, is being laid to rest by a group of monks. The Black Hood, an axe-wielder and a tormented soul who sold his soul to the devil after losing his love to El Santo, appears at the foot of his tomb and swears to seek his revenge no matter how many centuries it takes. El Santo is the chosen one and is sworn to fight for good and justice at any cost. After he finds his love, Alicia, dead at the hands of the Black Hood, El Santo must trust his faith and use his strength in this battle of good vs. evil.
The Secret Agent Lafargue locates the evil Professor Marcus headquarters, who with the help of Dr. Bellini and an android of his invention, plan to conquer the world. Lafargue is discovered and severely injured, so he is unable to remember where it is the basis of Marcus or what their plan. To resolve this situation the authorities call the Agent Zero team.