Atlantis has attacked America - but on whose orders? Now, as the leaders of men prepare to launch a war against the undersea kingdom, and Iron Man, Director of S.H.I.E.L.D., struggles to delay the inevitable, Namor wants answers! Will the Sub-Mariner have to take S.H.I.E.L.D. head-on? And will treacherous Atlanteans stab him in the back...?