Stanley's behavior has Hal becoming concerned and he thinks Stanley may be turning criminal. In trying to prevent any wrongdoing Hal keeps getting in the way of Stanley stopping a major jewel heist.
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.
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.
Stanley is sent undercover as "Slippery Sloan" to help bank robber Blackjack Clayton escape so he will trust Stanley enough to tell him where the $2 million in stolen money is hidden.
When Stanley is abducted by known enemy agents, Reed and Trent are concerned that he may actually be willing to betray the U. S. and its allies for financial gain.
Stanley's receives his next assignment and it's to let the enemy get their hands on fake plans concerning a missile system. But do to a mix up Stanley delivers the actual ones, then must figure out a way to fix his error.