The search for a stolen code book sends Stanley undercover and under the big top. Ultimately he has to power up and battle several performers and a gorilla in order to accomplish his mission.
Stanley is asked to demonstrate his powers for several representatives of foreign nations. One of them is an impostor who wants to kidnap Mr. Terrific.
The government sends Stanley on a mission where he must impersonate a safecracker who is identical to him. Stanley must fool the man's girlfriend plus somehow convince the gang he knows how to break into vaults.
The formula for the power pill is stolen. However, since the pill only works on Stanley, the thieves will also need to kidnap Stanley to brainwash him and then sell him to the highest bidder.