The year is 1945 and Nazi Germany is on the verge of defeat. Hitler launches a secret attack on America using a secret submarine. U90420 has the capability to carry and launch aircraft. The goal of this bold and probably on way mission is to bomb New York and Washington D.C. using newly developed bombs which only one Nazi scientist on board is aware of their destructive potential. All is proceeding as planned until U90420 is caught in a hole in time and passes in to the present day. Her captain makes her presence known when he can’t resist the temptation to torpedo a huge brightly painted cruise ship. From this moment the U90420 is hunted by the military and anti-terrorism might of present day America. Will U90420 succeed? Or will Hitler have his vengeance from the grave.