This episode concludes a 2-part story arc: “Affliction” and “Divergence.”
4-06: The Augments
After turning against him, Dr. Soong assists Enterprise track down the Augments.
4-18: In a Mirror, Darkly
In the mirror universe, a radically different Enterprise crew searches for the technologically-superior U.S.S Defiant, trapped from our universe.
As the Enterprise crew unwinds following the completion of their stressful Xindi mission. T’Pol and Trip visit Vulcan where she grapples with making a difficult decision.
As Enterprise investigates sabotage, the crew continues their search for Dr. Phlox.