A masked wrestler/superhero goes up against a madman and his army of robots.

Journalist Mike Harway decides to help his friend Christine in her search for her father, professor Baker, who mysteriously disappeared. The investigation brings them to Africa where they are captured and brought to the El Faium abandoned fort. It now hosts a laboratory designed by the twisted mind of Devilman, who dreams of swapping his natural brain with an artificial one that will make him perfect.

After accidentally killing an opponent in the ring, masked wrestler Superargo quits wrestling and, following the advice of his friend Col. Alex Kinski of the Secret Service, becomes a secret agent, using his superhuman abilities to stop villain Diabolicus' plans to wreck the global economy by turning uranium into gold.

Because of his difficult character, Colonel Lennox, commanding at Fort Sharp, a remote outpost on the border of the United States is hated by the soldiers of his troop. The situation is even more complicated when the fort is attacked by Indians.