After crashing his experimental aircraft in the Arctic Circle, USAF pilot Major Wiley Wolf develops amnesia and goes feral, living with a group of wolves after saving one he names Thor, who from then on becomes his constant companion.

Trained to the peak of physical perfection and instructed in the latest self defense and espionage techniques, he is given special hypnotic treatments that allow him to mentally alter his facial features to any number of preprogrammed "physiognomical disguises" with a minimum of make-up.

Finally, in addition to the usual James Bond-style gadgets, the CIA also provides Wolf with a one-of-a-kind high-tech stealth suit which is completely black and covers him from head to toe, making him resemble some eerie faceless shadow-like living silhouette.

Now code-named "Werewolf", the super-agent uses his special abilities to fight the enemies of freedom and democracy around the world, his top secret missions ranging from sabotaging missile bases in Cuba to battling the Red Chinese agent Sing Lo who has trained porpoises to spy on American submarines off the coast of Scotland.

When not on duty, Wiley relaxes with Thor in the secret solitude of his isolated mountaintop retreat which he leaves when summoned into action via a hidden underwater tunnel.