An elderly janitor hurt in an explosion at a secret army lab run by "The Shop" starts to grow younger. A ruthless operative is sent to cover it up, so the janitor and his wife go on the run with help from a sympathetic female agent.

In an explosion in the USA's most secret laboratory, old janitor Harlan Williams is incubated by totally unknown chemicals and starts to become younger instead of older. The government is interested in finding out everything about these changes, and a hunt across the USA starts for the fugitive Harlan.—Franz-Josef Brinkkoetter <[email protected]>

In a secret research center of the USA, lunatic genius Dr. Richard X. Toddhunter ignores the warning signal in the control panel and proceeds with his experiment with a particle accelerator. The laboratory blows-up and his assistant dies and the 70-year-old janitor Harlan Williams is exposed to a green radiation that rejuvenates him. However the scientist omits the truth about the accident in the preliminary hearing. The national security agent Terry Spann and her lover, General Louis Crewes, find the truth about what had happened in the laboratory and unsuccessfully try to shut down the experiment. But the CIA assassin Jude Andrews kills whoever tries to conduct a further investigation that may compromise the experiment. Now Terry and Louis decide to protect Harlan and his wife Gina from Andrews that wants to bring the janitor to become the guinea pig of Dr. Toddhunter.—Claudio Carvalho, Rio de Janeiro, Brazil