Captain America and the Falcon are in for the fight of their lives! Captain America has returned home, but his years in Dimension Z have left him out of synch with the world he knows. As the deranged super-soldier Nuke rampages in a foreign nation, the disturbing existence of the Weapon Minus program is revealed. But who is the Iron Nail, and what will make him Cap's newest arch-nemesis? Captain America faces Nuke with the lives of thousands on the line - but as the Iron Nail's revenge takes form, Nuke's true mission is revealed!