4-19: In a Mirror, Darkly, Part II
A power-struggle ensues for control of the U.S.S Defiant in the mirror universe.
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.
4-12: Babel One
While transporting a Tellarite ambassador, Enterprise rescues the crew of Shran’s ship and becomes caught up in a dispute between the Tellarites and Andorians.