4-01: Storm Front, Part I
Trapped in Earth during World War II, Enterprise investigates dramatic changes in the timeline as a result of the Temporal Cold War.
4-14: The Aenar
Archer and Shran seek out the Aenar, an Andorian subspecies, to investigate their connection with recent attacks.
T’Pau and T'Pol's mother, both Syrrannites, assist Archer and T’Pol search for the Kir'Shara and uncover the truth behind the terrorist attack.
Archer recruits Dr. Arik Soong from prison to track down a genetically-engineered group of radicals, whom he raised as children.