Captain America has returned home! But his years in Dimension Z have left him out of synch with the world he knows. And his return coincides with shocking news: Someone has set the deranged super-soldier Nuke loose in a foreign nation, and he's on a rampage! The disturbing existence of the Weapon Minus program is revealed, but who is the Iron Nail? What will make him Cap's newest arch-nemesis? And what secrets are held by Dr. Mindbubble, the unbelievable super-soldier created during the 1960s? Captain America takes on Nuke with the lives of thousands on the line - but as the Iron Nail's revenge takes form, Nuke's true mission is revealed! Captain America and the Falcon are in for the fight of their lives!