Radioactive Man has gone INSANE! Why else world he be fighting invisible enemies and causing collateral damage throughout Zenith City? Or perhaps it has something to do, Dr. Claude Kane II's recent invention "Foreverlution," communists run amok, or the return of one of the Atomic Avenger's greatest foes! Be that as it may, this "key" issue in RM's compendium of classic comics has our Man of the Atom battling dinosaurs!