Archer awakes from destroying the Xindi superweapon in the U.S. circa 1944 as a prisoner of Nazis controlling New York City. But he escapes with the help of American insurgents. The crew aboard Enterprise seeks answers for their journey back in time and the changes to Earth's history. They find a dying Daniels on board who tells T'Pol about an alien faction of the Temporal Cold War led by Vosk, now allied with the Nazis altering the events of World War II. Archer, T'Pol, and the Enterprise must defeat the aliens and restore the timeline to return to their time.